Renting a Car in San Diego: Do You Need the Rental Company’s Insurance?

You are standing at the counter in the Rental Car Center on Admiral Boland Way, tired from a flight, and the agent is asking whether you want the damage waiver, the supplemental liability, the personal accident cover and roadside protection. The total is creeping up by $40 a day. Somewhere in the back of your mind is a half-memory that your own policy covers this, or maybe your credit card does.

This guide walks through how rental car insurance in San Diego actually works: what each product at the counter does, the one California rule that catches almost every visitor out, what state law stops the rental company from charging you, and how to work out what you already have. All figures here are based on publicly available information as of the date of writing and can change without notice.

Quick Answer

You are never required to buy anything from the rental counter to rent a car in California, and California law requires the agent to tell you that. But California is unusual: rental companies here do not automatically include liability coverage in the base rate the way they do in other states, so you need liability from somewhere — your own auto policy, a non-owner policy, or the counter. The damage waiver is a separate question, and many people find their own comprehensive and collision coverage or a credit card benefit already covers damage to the rental car. California also caps what the rental company can bill you for after a scrape, which changes the maths. A licensed agent or your own insurer can confirm exactly what your policy does when you drive a rental.

What the Rental Counter Is Actually Selling You

The four or five products offered at a San Diego counter are not one thing, and the most common mistake is treating them as a single “insurance” decision. They cover completely different risks and they duplicate completely different parts of your existing coverage.

Damage Waiver (DW), also called CDW or LDW

This is not insurance. It is a contract term in which the rental company agrees not to hold you responsible for damage to, loss of, or theft of the car. Enterprise says as much in plain terms on its own US protection-products page, noting that the purchase of a damage waiver is optional and not required to rent a vehicle, and that it will not apply to damage occurring in Mexico.

Because it is a waiver rather than a policy, there is no claim, no deductible and no adjuster. That is its real appeal: if you dent a bumper in the Gaslamp parking structure, you hand back the keys and leave. The downside is price. The law firm Matthiesen, Wickert & Lehrer, which publishes a fifty-state reference on rental car coverage for claims professionals, puts the cost of a damage waiver at up to around $30 per day, or roughly 25% to 40% of the base rental price.

Supplemental Liability Protection (SLP) or Liability Insurance Supplement (LIS)

This is real insurance, and it covers the other party — their injuries, their car, their property — when you are at fault. Enterprise states that its SLP gives the renter and authorised drivers up to $300,000 combined single limit for third-party claims, with Enterprise providing coverage to the applicable minimum financial responsibility limit and Zurich American Insurance Company providing excess coverage above that up to the $300,000 cap. Enterprise puts the cost at an average of $8.44 to $42.38 per day depending on location.

Different brands use different names and different limits, which is why comparing “liability” across companies is harder than it looks. Read the limit, not the label.

Personal Accident Insurance (PAI)

Medical and accidental death benefits for you and your passengers. Enterprise now offers PAI only at its truck rental locations in the US, at an average of $2.68 to $8.50 per day where available. For most travellers this duplicates health insurance and, if you have it, the medical payments coverage on your own auto policy.

Personal Effects Coverage (PEC)

Covers your belongings in the car against loss or damage. Enterprise prices PEC at an average of $5.99 to $15.67 per day. Homeowners and renters policies commonly include off-premises property coverage, so this is the product most likely to be pure duplication — though deductibles and sub-limits vary, and a policy with a $1,000 deductible is cold comfort for a stolen laptop bag.

Roadside Assistance Protection (RAP)

Waives charges for lockouts, lost keys and running out of fuel. If you have AAA, a card with roadside benefits, or roadside assistance on your own policy, you are buying it twice.

Counter product	What it actually covers	Typical daily cost	Most likely to duplicate
Damage Waiver (DW/CDW/LDW)	Damage, loss or theft of the rental car itself	Up to roughly $30/day (MWL estimate); capped by California law for smaller car classes	Your comprehensive and collision coverage; many travel credit cards
Supplemental Liability (SLP/LIS)	Injury and property damage you cause to other people	$8.44–$42.38/day (Enterprise US average)	Your own liability limits; a non-owner policy
Personal Accident (PAI)	Medical, ambulance and death benefits for you and passengers	$2.68–$8.50/day where offered (Enterprise US average)	Health insurance; MedPay on your auto policy
Personal Effects (PEC)	Your belongings inside the car	$5.99–$15.67/day (Enterprise US average)	Homeowners or renters insurance
Roadside (RAP)	Lockouts, lost keys, fuel delivery, jump starts	Varies by location	AAA, card benefits, roadside on your own policy

Costs shown are the ranges the companies themselves publish for US rentals and vary by location and vehicle class. A San Diego airport counter is at the higher end of most ranges, not the lower.

The California Rule Most Visitors Don’t Know

Here is the part that matters most and gets the least attention.

In most US states, a rental car comes with the state’s minimum liability coverage built into the rate. California is the exception. The Matthiesen, Wickert & Lehrer fifty-state chart, last updated in May 2025, describes California as the only state in which rental companies do not automatically provide liability coverage as part of the rental agreement, and notes that a renter in California may need to bring their own liability coverage. The chart adds that some companies may extend minimum primary liability to international renters whose licences show an address outside the US.

That means a US resident who declines everything at a San Diego counter and has no personal auto policy is driving with no liability coverage at all — legal exposure that starts at the first dollar of someone else’s hospital bill.

California’s minimum liability requirement rose on 1 January 2025 under Senate Bill 1107, the first increase since 1967. The California DMV lists the current minimums, tied to Insurance Code §11580.1b, as $30,000 for injury or death to one person, $60,000 for injury or death to more than one person, and $15,000 for property damage — the combination usually written as 30/60/15. The DMV also lists the alternatives to a policy: a $75,000 cash deposit with the DMV, a DMV-issued self-insurance certificate, or a $75,000 surety bond from a company licensed in California.

Those minimums are low against San Diego medical costs and San Diego car values. Many people renting here carry considerably more on their own policies, and that higher limit is usually what follows them into the rental car.

Note also that the rental company cannot make you buy anything. California’s Department of Insurance licenses rental car agents under Insurance Code §1758.8 and following, and its required training outline for rental car agencies requires them to disclose to the renter — acknowledged in writing or by clear signs at the counter — that buying the insurance products described in that article is not required in order to rent a vehicle.

What California Law Stops the Rental Company From Charging You

This is the genuinely useful part, and it is almost never explained at the counter. California limits renter liability far more tightly than most states, which changes how much risk you are actually transferring when you buy the damage waiver.

The damage waiver has a price ceiling

Civil Code §1939.09 caps the daily damage waiver rate at $25 for vehicles the rental company designates as economy, compact, intermediate, standard or full-size — the five smallest body-size categories used by the Association of Car Rental Industry Systems Standards for North America. Since 1 January 2023, that cap has been adjusted each January in line with the Consumer Price Index for All Urban Consumers. Larger vehicles and specialty classes sit outside that cap, which is one reason the SUV you were upgraded to costs so much more to waive.

A waiver in California has to be a real waiver

Under the same section, a damage waiver is deemed to give the renter no liability for damage, loss, loss of use, or related costs, and any limitation or exclusion beyond those the statute specifically permits is void and unenforceable.

The permitted exclusions are worth knowing before you rely on the waiver. The statute lets a rental company disapply the waiver where the damage results from intentional, wilful, wanton or reckless conduct; driving under the influence in violation of Vehicle Code §23152; towing or pushing something; or driving on an unpaved road where the road or driving conditions caused the damage. It also lets the company disapply it where the vehicle is used for commercial hire, used in conduct chargeable as a felony, entered in a speed contest or driver training, operated by someone who is not an authorised driver, or operated outside the United States — the clause that matters if Tijuana is on your itinerary.

Loss of use is off the table in California

Elsewhere, the charge that turns a $900 repair into a $1,600 bill is “loss of use” — the daily rental income the company says it lost while the car was in the shop. Matthiesen, Wickert & Lehrer’s loss-of-use reference states that in California loss of use is not recoverable from a renter or authorised driver, though it can still be recovered from a third party who caused the damage. Civil Code §1939.07 backs this up by requiring that a claim against a renter for damage, excluding loss of use, be reasonably and rationally related to the actual loss.

Administrative fees are capped

Civil Code §1939.03 lets the company recover an administrative charge covering appraisal and related costs, and §1939.05 caps it on a sliding scale: nothing at all where the estimated parts and labour come to $100 or less, $50 where the estimate is over $100 up to $500, $100 where it is over $500 up to $1,500, and $150 where it exceeds $1,500.

Vandalism and theft have their own rules

Section 1939.03 caps the renter’s exposure for vandalism unrelated to a theft at $500. On theft, the renter is presumed to have no liability if an authorised driver returns the ignition key furnished by the rental company and meets the statute’s other conditions on reporting and cooperation. Given that a rental car parked overnight in Ocean Beach or North Park is a realistic vandalism risk, the $500 ceiling is a meaningful piece of built-in protection.

You can force the claim to your own insurer

Section 1939.07 gives the renter a right many people never use: if you have personal or business insurance and the coverage is confirmed during business hours, you can require the rental company to submit the claim to your carrier, and the rental company is barred from telling you it will not deal with your insurer. The statute also requires the company to mitigate damages and caps a total-loss claim at the total loss value calculated the way insurers normally calculate it, less any salvage proceeds it keeps.

Put together: in California, a renter’s worst realistic outcome after a moderate collision is the repair cost plus a capped administrative fee — no loss-of-use charge, no open-ended add-ons. That does not make the damage waiver worthless. It does mean the gap you are paying to close is narrower here than the counter pitch implies.

Does Your Own Car Insurance Already Cover the Rental?

For most San Diego residents with a standard California auto policy, the answer is usually yes — with three caveats that matter.

Liability follows you. The liability limits on your own policy generally extend to a car you rent for personal use, which is why a San Diego household with, say, 100/300/100 limits is already better protected than the $300,000 combined single limit an SLP would give them at extra cost.

Damage to the rental follows your comprehensive and collision — with your deductible. If you carry comprehensive and collision on your own car, that coverage commonly extends to a rental, but you pay your deductible and you file a claim on your own policy. A $1,000 deductible and a potential rate impact at renewal is exactly the calculation that makes some people buy the waiver anyway.

Not every policy does this automatically. The California Department of Insurance issued a consumer alert in October 2023 warning that not every auto policy automatically provides coverage for rental vehicles, and that some policies cover a rental only when it is a replacement or substitute vehicle provided while the insured car is being repaired. That is the single most important sentence in this article for anyone with a minimum-limits policy, a non-standard carrier, or a policy bought online without an agent walking through the terms.

The fix is a five-minute phone call to your insurer before you book, asking three specific questions: does my liability extend to a rental car in California, does my physical damage coverage extend to it, and what is my deductible if it does.

Two groups in San Diego should be especially careful here. Military families arriving on PCS orders often have a gap between selling a car at the last duty station and buying one here, and a lapsed policy does not follow you into a rental. And anyone who has dropped down to a liability-only policy on an older car has no comprehensive or collision to extend — the liability travels, the damage coverage does not.
Credit Card Rental Coverage: Useful, But Narrower Than People Think

Credit card rental benefits are the most misunderstood piece of this puzzle. They are genuinely valuable, and they cover exactly one thing: damage to or theft of the rental car itself.

What the benefit does

Chase’s own explainer on Sapphire rental coverage sets out the mechanics clearly. The cardmember has to be the primary driver on the rental agreement, the full rental has to be charged to the card, and the cardmember has to decline the rental company’s collision damage waiver at pickup. Chase says accepting the rental company’s coverage cancels the card benefit out. In return, Sapphire cardmembers get primary coverage for theft, damage, valid loss-of-use charges, administrative fees and reasonable towing charges arising from covered theft or damage.

Primary matters. It means you do not have to involve your own insurer first, which avoids a deductible and avoids a claim on your record.

What it never does

No mainstream credit card rental benefit includes liability coverage. American Express states this plainly for its paid Premium Car Rental Protection product, noting that the plan does not include coverage for liability, uninsured or underinsured motorist, personal injury protection, or disability. Given that California does not fold liability into the base rental rate, a credit card alone is not a complete answer for a San Diego rental.

The exclusions that bite

Chase lists a set of limits that rule out a surprising number of real San Diego trips: only rentals under 31 consecutive days, no valuables left in the car, off-road driving can void the protection, and no coverage for vehicles more than ten years old, motorcycles, electric scooters or mopeds. Vans carrying more than nine passengers are excluded, as are rented moving trucks and vans — relevant if you are moving into a new place in Hillcrest and thought the card had you covered. Peer-to-peer and hourly rentals are also excluded, which is the Turo problem discussed below.

Where published figures disagree

This is worth flagging rather than papering over. Chase’s own consumer page says the Sapphire Preferred benefit covers up to the actual cash value of the vehicle while excluding certain expensive and exotic cars, and that Sapphire Reserve covers up to $75,000 without the exotic exclusion. Several card-analysis sites, including NerdWallet and CNBC Select, describe the Preferred limit as $60,000 and the Reserve limit as $75,000.

The difference is not sloppiness so much as versioning. The binding document is the Guide to Benefits attached to your specific card, which carries its own effective date and underwriter, and those change. RentalVerdict, for instance, cites a Sapphire Preferred Guide to Benefits effective 14 June 2026 underwritten by Virginia Surety Company. The practical takeaway: read the Guide to Benefits in your own card account rather than a summary, because the number that governs your claim is the one in your document.

Amex’s paid upgrade

American Express sells an opt-in product, Premium Car Rental Protection, rather than relying on the complimentary benefit alone. American Express describes it as a flat fee charged per rental period, with coverage from the first day of the rental, and its product page advertises primary theft or damage coverage of up to $75,000 or $100,000 depending on the plan chosen. Coverage runs up to 42 consecutive days, reduced to 30 for Washington State residents, and is unavailable for rentals originating in Australia, Ireland, Israel, Italy, Jamaica and New Zealand. The product is underwritten by AMEX Assurance Company and offered through American Express Travel Related Services, which holds California licence number 0649234.

Pricing varies by state. Jerry, an insurance comparison site, reported California residents paying $15.95 for the lower-limit option and $17.95 for the higher-limit option, against $19.95 and $24.95 for residents of most other states. Because it is a flat fee per rental rather than a daily charge, the longer the rental, the better it looks against a per-day damage waiver.

Route	Covers damage to rental?	Covers liability to others?	Typical cost	Main catch
Your own California auto policy	Yes, if you carry comprehensive and collision	Yes, at your existing limits	Already paid	Your deductible applies; a claim goes on your record; CDI warns not every policy extends to rentals
Travel credit card benefit	Yes, often primary; limits vary by card	No — never	Included with the card	Must decline the counter waiver and pay with that card; long list of excluded vehicles and rental types
Rental counter products	Yes, via the damage waiver	Yes, via SLP (Enterprise: up to $300,000 CSL)	Roughly $25–$45+/day for both	Most expensive route; heavy duplication if you already have coverage
Non-owner policy	No	Yes, at the limits you buy	Roughly $27–$54/month depending on source	Does nothing for damage to the rental car; you still need a waiver or card benefit

Two Worked Examples With San Diego Numbers

The numbers below are illustrative, built from the published ranges cited in this article, and are not quotes. Your own rate will differ.

Example 1: A Normanheights couple with a full-coverage policy

Maria and Devon live near Adams Avenue and keep one car between them. Their car is in the shop, and they rent a midsize SUV from the SAN Rental Car Center for five days to drive out to Anza-Borrego and back. Base rate roughly $65 a day, which is in line with what AutoSlash observed for San Diego airport rentals, so about $325 before tax and fees.

At the counter they are offered a damage waiver and supplemental liability. Using the ranges above — call it $25 a day for the waiver and $15 a day for SLP — that is $200 over five days, lifting the rental by more than 60%.

They already carry 100/300/100 liability plus comprehensive and collision with a $1,000 deductible. Their liability limits are materially higher than the $300,000 combined single limit the SLP would add, so the SLP buys them very little. The waiver is a closer call: it would remove their $1,000 deductible exposure and keep any claim off their own policy. Against that, California caps the administrative fee at $150 even on a large repair and bars a loss-of-use charge entirely, so the runaway-bill scenario that drives waiver sales in other states does not exist here.

Many households in this position decline the SLP, then decide the waiver on how much they value not filing a claim. Their own insurer or a licensed agent can tell them whether a single at-fault claim would affect their renewal, which is the number that actually settles it.

Example 2: A visitor with no car of their own

Priya flies into SAN for a four-day work trip and does not own a car, so she has no personal auto policy. Her card gives her primary damage coverage on the rental, so the damage side is handled if she pays with that card and declines the counter waiver.

Liability is the gap, and in California it is a real gap, because the rental company does not fold minimum liability into the base rate for US renters. Her realistic options are the counter’s SLP at roughly $8 to $42 a day, or a non-owner policy bought in advance.

Over four days, SLP at $15 a day is $60 — cheaper than a month of non-owner coverage for one trip. If she rents three or four times a year, the maths flips, and a year-round non-owner policy costs less than repeatedly buying liability by the day while also covering her when she borrows a friend’s car.

If You Don’t Own a Car: Non-Owner Policies in California

A non-owner policy is a liability-only policy attached to you rather than to a vehicle. It covers injury and property damage you cause while driving a car you do not own, and it does nothing for damage to the car you are driving.

Published cost estimates vary a lot, and the variation is methodological rather than random. Each publisher quotes a different driver profile, different liability limits and a different mix of ZIP codes, so the averages are not measuring the same thing.

Source	Reported California non-owner cost	What the figure represents
MoneyGeek	About $54 per month	Average across surveyed California non-owner policies
Insurify	$47 per month	Insurify quote data for California non-owner coverage
WalletHub	$324 per year (about $27 per month)	Average California non-owner policy, contrasted with $717 for a minimum-limits owner policy
Insure.com	$500 per year statewide, with Auto Club at $269	Rate analysis across carriers writing non-owner cover in California
Insuranceopedia	Kemper cheapest at $450 per year	Carrier-level average, noting sharp variation by location

The pattern to take from the table is the ranking, not the precise number: non-owner coverage in California generally runs somewhere between roughly $270 and $650 a year, and it is cheaper than an owner’s minimum-limits policy. Most insurers do not sell these online, so it usually means calling a carrier or a broker. Whether it beats paying for liability by the day depends entirely on how often you rent.

San Diego Specifics: The Rental Car Center, the Fees and the Local Quirks

Every rental pickup and drop-off at San Diego International happens at the Rental Car Center at 3355 Admiral Boland Way, with free shuttle buses running between the terminals and the facility around the clock. The airport handled 25.32 million passengers in 2025, its busiest year on record, so the counters here are high-volume operations where the upsell script is well rehearsed.

Renting at the airport also carries fees you will not see at a neighbourhood branch in Pacific Beach or Kearny Mesa. Fox Rent A Car’s San Diego policy page lists a customer facility charge, an airport concession fee, a California tourism assessment fee and a bus access fee among the charges that apply. Budget discloses a customer facility charge of $10 per contract in California.

That last figure is in flux. Assembly Bill 1150, chaptered on 1 October 2025 as Chapter 182 of the Statutes of 2025, amended the Government Code provisions governing alternative customer facility charges. The Assembly Committee on Privacy and Consumer Protection analysis of the bill described it as raising the maximum daily user fee for airport rental car customers to $12 and adding periodic inflation adjustments from 2029. None of this is insurance, but it inflates the base against which the counter’s daily add-ons are quoted, and it is one reason an off-airport pickup can be worth the rideshare fare.

One more local detail worth knowing: additional drivers. National’s San Diego airport page states that a renter’s spouse or domestic partner, parent, child, sibling, grandparent and coworkers who meet the age and licence requirements are authorised drivers at no extra charge, while any other additional driver costs $15 per day unless other contractual terms apply. That matters because California’s damage waiver rules let the company disapply the waiver where the car is operated by someone who is not an authorised driver — so handing the keys to a friend to drive back from a wedding in Del Mar can undo the protection you paid for.

Driving a San Diego Rental Into Tijuana or Baja

This is the single most expensive mistake available to a San Diego renter, and the rules are stricter than most visitors expect.

Start with the coverage. Civil Code §1939.09 expressly permits a rental company to provide that the damage waiver does not apply where the vehicle is operated outside the United States. Enterprise says the same in its own words: the damage waiver does not apply to damage occurring in Mexico, and its supplemental liability policies do not cover loss arising from use of the vehicle in Mexico. So everything you bought at the counter stops at San Ysidro.

Then the permission. Enterprise’s own San Diego International Airport page states that vehicles rented in the US cannot be driven into Mexico. Budget’s Mexico page says only corporate customers may take a rental into Mexico, that renters must tell staff at the counter, that Mexican automobile liability insurance must be purchased, and that Budget offers that insurance in only three states — Texas, Arizona and California — and only at the counter rather than online. Budget also notes that one-way rentals into Mexico are not allowed, but that it operates a location at Cross Border Xpress near the Tijuana airport. Policies differ by brand and by individual branch and change frequently, so the only reliable answer is the one your specific branch gives you in writing on the rental agreement.

Finally, the legal risk. Budget warns that if the required insurance is not bought, a renter may be subject to arrest after an accident and the rental could be seized. Mexican law requires recognised third-party liability cover, and US policies generally do not satisfy it. People crossing regularly often keep a separate Mexican liability policy, but it has to be written for the specific vehicle, and a rental vehicle you are not authorised to take across the border is not a vehicle any of this fixes.

If Baja is on the itinerary, the common workarounds are walking or taking the trolley across and renting on the Mexican side, or using Cross Border Xpress, rather than trying to make a San Diego airport rental work.

Turo and Peer-to-Peer Car Sharing

Peer-to-peer platforms are popular in San Diego, and they sit in a different regulatory box. The California Department of Insurance issued a consumer alert in October 2023 specifically warning that personal vehicle sharing programs are not the same as traditional rental car programs and are treated differently by insurers and by credit card companies offering damage waiver benefits. The alert notes these programs are defined in Insurance Code §11580.24, and that card coverages typically address rentals from traditional rental car companies rather than peer-to-peer services.

Chase confirms this from the other direction by excluding peer-to-peer and hourly rentals from its Sapphire benefit. So the card in your wallet that covers an Enterprise booking may cover nothing at all on Turo.

Turo sells its own guest protection plans instead. As summarised by NerdWallet, the top tier costs 65% of the trip price with a $14 daily minimum and carries up to $750,000 in third-party liability with a $0 damage deductible, restricted to guests aged 21 and over. The middle tier costs 40% of trip price with a $12 daily minimum, the state minimum liability limit, and a $500 deductible. The lowest tier costs 18% or 25% of trip price depending on trip value, with a $10 daily minimum, state minimum liability, and a $3,000 deductible. Declining protection leaves only the state minimum liability required where the car is registered. ValuePenguin reports that Turo’s liability coverage is treated as secondary, meaning your own limits are exhausted first.

Two further points that catch people out: these plans generally do not cover interior or mechanical damage, and in California, Turo’s host documentation requires repairs to go through a shop that is a member of the Bureau of Automotive Repair for reimbursement to be eligible. If you are weighing Turo against a traditional rental in San Diego, the plan cost belongs in the price comparison from the start, not as an afterthought at checkout.

Common Mistakes and How to Cut the Cost

• Assuming the rental comes with liability. In California it generally does not. This is the mistake with the largest downside.
• Buying the waiver and the card benefit. Accepting the rental company’s waiver cancels the credit card benefit. You cannot stack them; you can only pay twice.
• Paying with the wrong card. The card benefit usually requires the full rental to be charged to that card and the cardmember to be the primary renter. Splitting payment or putting a colleague’s name on the contract can void it.
• Not checking the vehicle class. California’s $25 damage waiver cap applies to the five smallest body-size categories. A free upgrade to a large SUV can quietly move you outside the capped classes.
• Letting an unlisted driver take the wheel. Operation by someone who is not an authorised driver is one of the exclusions the statute permits.
• Forgetting you can route the claim. Civil Code §1939.07 lets you require the rental company to submit a damage claim to your own insurer once coverage is confirmed.
• Renting at the airport by default. Concession fees, customer facility charges and the tourism assessment apply at SAN and not at a neighbourhood branch.
• Photographing nothing. Time-stamped photos of every panel, the wheels, the windscreen and the fuel gauge at pickup and return are free, and they settle disputes about pre-existing damage faster than any argument at the counter.
• Buying PAI and PEC reflexively. These are the two products most likely to duplicate health insurance and a homeowners or renters policy.

Frequently Asked Questions

Do I legally have to buy insurance from the rental car company in California?
No. The California Department of Insurance’s required training outline for licensed rental car agents obliges them to disclose to renters, in writing or by clear signs at the counter, that buying the insurance products offered is not required in order to rent a vehicle. You do, however, need liability coverage from somewhere to drive legally in California.

Does a rental car in California come with the state minimum liability?
Generally not for US residents. The Matthiesen, Wickert & Lehrer fifty-state chart describes California as the only state where rental companies do not automatically provide liability coverage as part of the rental agreement, and notes some companies extend minimum primary liability only to international renters with licences showing a non-US address.

What is the California minimum liability limit in 2026?
The California DMV lists the minimums as $30,000 for injury or death to one person, $60,000 for injury or death to more than one person, and $15,000 for property damage. Those limits took effect on 1 January 2025 under Senate Bill 1107, replacing figures that had stood since 1967.

Can the rental company charge me for the days the car is in the shop?
Not in California. Matthiesen, Wickert & Lehrer’s loss-of-use reference states that loss of use is not recoverable from a renter or authorised driver in California, though it can still be recovered from a third party who caused the damage. Civil Code §1939.07 requires any damage claim against a renter to be reasonably related to the actual loss.

How much can a damage waiver cost in California?
Civil Code §1939.09 caps the rate at $25 per rental day for vehicles designated economy, compact, intermediate, standard or full-size, with annual Consumer Price Index adjustments applied each January since 2023. Larger and specialty vehicle classes sit outside that cap, which is why SUV and premium waivers cost considerably more.

Does my credit card cover liability if I hit someone?
No. Credit card rental benefits cover damage to or theft of the rental vehicle. American Express states explicitly that its Premium Car Rental Protection does not include liability, uninsured or underinsured motorist, personal injury protection or disability coverage. In California, that leaves a real gap if you have no personal policy.

Can I drive a San Diego rental car into Tijuana?
Usually not. Enterprise’s San Diego International Airport page states that vehicles rented in the US cannot be driven into Mexico, and Budget restricts Mexico travel to corporate customers who buy Mexican liability insurance at the counter. California law also lets a damage waiver exclude damage occurring outside the United States.

Does my credit card cover a Turo rental?
Often not. Chase excludes peer-to-peer and hourly rentals from its Sapphire auto rental benefit, and the California Department of Insurance has warned that credit card damage waiver benefits typically address traditional rental companies rather than personal vehicle sharing programs. Turo sells its own tiered guest protection plans instead.

I don’t own a car. What are my options in San Diego?
Two main ones: buy supplemental liability at the counter, which Enterprise prices at an average of $8.44 to $42.38 a day, or buy a non-owner liability policy in advance, which published estimates put somewhere between roughly $270 and $650 a year in California. A non-owner policy does not cover damage to the rental itself.

Will my own policy definitely cover the rental?
Not necessarily. The California Department of Insurance warned in a 2023 consumer alert that not every auto policy automatically covers rental vehicles, and that some cover a rental only as a substitute while the insured car is being repaired. Call your insurer and confirm liability, physical damage and your deductible before you book.

The Bottom Line

Rental car insurance in San Diego comes down to two separate questions, and confusing them is what costs people money. Damage to the rental car is usually already covered by your comprehensive and collision or by a travel credit card, subject to a deductible and a long list of exclusions. Liability to other people is the one California does not hand you automatically, and it is the piece worth sorting out before you reach the counter.

The single most useful next step takes five minutes: call your own insurer, or the number on the back of the card you plan to pay with, and ask specifically whether liability extends to a California rental, whether physical damage extends to it, and what deductible applies. Write the answers down and take them to the Rental Car Center with you. A licensed agent or your own carrier can tell you which of the options above actually applies to your situation.

Sources

1. California Department of Motor Vehicles, “Insurance Requirements,” https://www.dmv.ca.gov/portal/vehicle-registration/insurance-requirements/ — accessed 20 September 2026.
2. California Department of Insurance, “Consumer Alert on Insurance Coverage for Rental Cars,” 16 October 2023, https://www.insurance.ca.gov/0400-news/0102-alerts/2023/Consumer-Alert-on-Coverage-for-Rentals.cfm — accessed 20 September 2026.
3. California Department of Insurance, “Car Rental Agent Licensing,” https://www.insurance.ca.gov/0200-industry/0050-renew-license/0200-requirements/rental-car — accessed 20 September 2026.
4. California Department of Insurance, “Outline of Required Training Elements — Rental Car Agent” (Form LIC RCA 4), https://www.insurance.ca.gov/0200-industry/0050-renew-license/0200-requirements/rental-car/upload/LICRCA4RCAgtReqTrainElements.pdf — accessed 20 September 2026.
5. California Civil Code §1939.09 (damage waivers, rate cap, permitted exclusions, disclosures), via FindLaw, https://codes.findlaw.com/ca/civil-code/civ-sect-1939-09/ — accessed 20 September 2026.
6. California Civil Code §1939.07 (claims against renters, mitigation, routing claims to the renter’s insurer), via FindLaw, https://codes.findlaw.com/ca/civil-code/civ-sect-1939-07/ — accessed 20 September 2026.
7. California Civil Code §1939.03 (scope of renter responsibility), via California Public Law, https://california.public.law/codes/civil_code_section_1939.03 — accessed 20 September 2026.
8. California Civil Code §1939.05 (administrative charge caps), via California Public Law, https://california.public.law/codes/civil_code_section_1939.05 — accessed 20 September 2026.
9. Matthiesen, Wickert & Lehrer, S.C., “Rental Car Companies’ Liability Insurance Primary or Excess in All 50 States,” updated 21 May 2025, https://www.mwl-law.com/wp-content/uploads/2020/03/RENTAL-CAR-COMPANY-INSURANCE-PRIMARY-OR-EXCESS-CHART.pdf — accessed 20 September 2026.
10. Matthiesen, Wickert & Lehrer, S.C., “Loss of Use in All 50 States Chart,” https://www.mwl-law.com/wp-content/uploads/2019/01/LOSS-OF-USE-IN-ALL-50-STATES-CHART-1.pdf — accessed 20 September 2026.
11. Enterprise Rent-A-Car, “What insurance options are available for my Enterprise rental car?”, https://www.enterprise.com/en/car-rental-faqs/us-insurance-and-protections/car-rental-insurance.html — accessed 20 September 2026.
12. Enterprise Rent-A-Car, “Car Rental San Diego International Airport (SAN),” https://www.enterprise.com/en/car-rental-locations/us/ca/san-diego-international-airport-323m.html — accessed 20 September 2026.
13. Budget Rent a Car, “Can You Rent a Car to Drive to Mexico?”, https://www.budget.com/en/help/usa-faqs/cross-into-mexico — accessed 20 September 2026.
14. Budget Rent a Car, “Cheap Car Rentals at San Diego Intl Airport (SAN),” https://www.budget.com/en/locations/us/ca/san-diego/san — accessed 20 September 2026.
15. Fox Rent A Car, “Rental Car Policies — San Diego Airport,” https://www.foxrentacar.com/en/locations/united-states/california/san-diego-airport/rental-policies.html — accessed 20 September 2026.
16. National Car Rental, “Car Rental in San Diego International Airport (SAN),” https://www.nationalcar.com/en/car-rental-locations/us/ca/san-diego-international-airport-324m.html — accessed 20 September 2026.
17. San Diego International Airport, “Rental Car Center,” https://www.san.org/before-you-go-travel-tips/rental-car-center/ — accessed 20 September 2026.
18. San Diego County Regional Airport Authority, “San Diego International Airport Sets New Passenger Record in 2025,” 18 February 2026, https://www.san.org/media-resources/san-diego-international-airport-sets-new-passenger-record-in-2025/ — accessed 20 September 2026.
19. California Assembly Committee on Privacy and Consumer Protection, analysis of AB 1150 (Schultz), hearing 1 April 2025, https://apcp.assembly.ca.gov/media/892 — accessed 20 September 2026.
20. LegiScan, “CA AB1150 — 2025-2026 Regular Session” (chaptered 1 October 2025, Chapter 182, Statutes of 2025), https://legiscan.com/CA/bill/AB1150/2172 — accessed 20 September 2026.
21. Chase, “How does Chase Sapphire Preferred and Reserve car rental insurance work?”, https://www.chase.com/personal/credit-cards/education/basics/chase-sapphire-rental-car-insurance-guide — accessed 20 September 2026.
22. American Express, “Premium Car Rental Protection,” https://www.americanexpress.com/en-us/insurance/premium-car-rental-protection/ — accessed 20 September 2026.
23. American Express, “Premium Car Rental Protection FAQ,” https://www.americanexpress.com/en-us/insurance/premium-car-rental-protection/faq/ — accessed 20 September 2026.
24. Jerry, “AmEx Premium Car Rental Protection: What to Know,” https://jerry.ai/car-insurance/american-express-premium-car-rental-insurance-everything-you-need-to-know/ — accessed 20 September 2026.
25. NerdWallet, “Chase Sapphire Reserve Car Rental Insurance Guide,” https://www.nerdwallet.com/article/travel/chase-sapphire-reserve-car-rental-insurance-guide — accessed 20 September 2026.
26. CNBC Select, “Chase Sapphire Rental Car Insurance Guide,” https://www.cnbc.com/select/chase-sapphire-rental-car-insurance/ — accessed 20 September 2026.
27. RentalVerdict, “Chase Sapphire Rental Car Insurance: What It Actually Covers,” https://rentalverdict.com/insurance/chase-sapphire-rental/ — accessed 20 September 2026.
28. NerdWallet, “Turo Car Insurance,” https://www.nerdwallet.com/insurance/auto/learn/turo-car-insurance — accessed 20 September 2026.
29. ValuePenguin, “How Does Turo Insurance Work?”, https://www.valuepenguin.com/turo-car-insurance — accessed 20 September 2026.
30. Turo, “Protection plans — In detail | US guests,” https://help.turo.com/en_us/protection-plans-including-insurance-or-us-guests-HkwgBNgN9 — accessed 20 September 2026.
31. MoneyGeek, “Non-Owner Car Insurance in California: Guide and Costs,” https://www.moneygeek.com/insurance/auto/non-owner-car-insurance-california/ — accessed 20 September 2026.
32. Insurify, “Non-Owner Car Insurance in California,” https://insurify.com/car-insurance/california/non-owner-car-insurance/ — accessed 20 September 2026.
33. WalletHub, “How Does Non-Owner Car Insurance Work in California?”, https://wallethub.com/answers/ci/non-owner-car-insurance-california-1000288-2140687280/ — accessed 20 September 2026.
34. Insure.com, “Non-owner car insurance in California,” https://www.insure.com/car-insurance/non-owners-car-insurance-in-california/ — accessed 20 September 2026.
35. Insuranceopedia, “Non-Owner Car Insurance in California 2026,” https://www.insuranceopedia.com/auto-insurance/non-owner-car-insurance-california — accessed 20 September 2026.
36. AutoSlash, “Do I Need a Rental Car in San Diego?”, https://blog.autoslash.com/do-i-need-a-rental-car-in-san-diego/ — accessed 20 September 2026.
37. AutoSlash, “Can You Drive a Rental Car into Mexico?”, https://blog.autoslash.com/crossing-the-border-from-the-united-states-to-mexico/ — accessed 20 September 2026.
38. Insurify, “Do You Need Rental Car Insurance in California?”, https://insurify.com/car-insurance/california/rental-car-insurance/ — accessed 20 September 2026.

Disclaimer

Disclaimer: This article is for general information and educational purposes only. It is based on publicly available information believed to be accurate at the time of writing, and rates, rules, products and eligibility requirements change frequently. It is not financial, insurance, tax or legal advice, and no advisor-client relationship is created by reading it. We are not licensed financial advisors, insurance agents, tax preparers or attorneys, and nothing here is a recommendation to buy, sell or hold any product, policy or security. Your own situation is different from the examples used here, so please consult a licensed financial advisor, insurance agent, tax professional or attorney before making any decision. We make no warranty as to the accuracy or completeness of the information and accept no liability for any loss arising from its use. Some links may be to third-party sites we do not control.