Should I Buy the Rental Car Company's Insurance?
Should I Buy the Rental Car Company's Insurance?
Here's an embarrassing confession from a lawyer who has practiced personal injury law in Nevada County for twenty-five years: every single time I stand at a rental car counter, I hesitate over the insurance question. Do I buy the coverage? Do I decline it? What am I already covered for and what am I not?
If you've felt the same hesitation, you're not being foolish. The rental car insurance question is genuinely confusing, the counter agent has an incentive to sell you the maximum, and the fine print in your own policies isn't written for humans. This piece walks through what the rental company is actually offering, what you probably already have, and how to decide in the moment without paying for things you don't need.
What They're Actually Selling You at the Counter
Rental agents usually offer four or five separate products. Understanding what each one actually is will change how you decide.
Collision Damage Waiver (CDW) / Loss Damage Waiver (LDW). This is the big-ticket item, usually $20–40 per day. Despite the name, it's not technically insurance. It's a waiver in which the rental company agrees not to pursue you for damage to the rental vehicle itself. Without it, you can be liable for the full repair cost or, in a total loss, the fair market value of the car — plus loss of rental income while the car is in the shop.
Your personal auto insurance policy's collision and comprehensive coverage usually extends to rental cars in the United States. Many major credit cards also include CDW/LDW coverage as a cardholder benefit — either primary (pays first) or secondary (pays after your personal insurance).
Supplemental Liability Insurance (SLI). Extra liability coverage on top of the rental company's minimum. In California, rental companies are required to provide only the state minimum liability coverage. As of January 2025 that minimum is what insurance agents call “30/60/15”: $30,000 in bodily injury coverage per person, $60,000 per accident total, and $15,000 for property damage. Those numbers are set by California statute. For a serious injury claim, they are nowhere near enough. SLI usually raises the limit to $1 million.
If your personal auto policy has healthy liability limits, those limits usually extend to your use of a rental car. If your personal policy has low or minimum limits, SLI can genuinely matter.
Personal Accident Insurance (PAI). Medical coverage for you and your passengers if you're injured in the rental. Usually duplicative of your existing health insurance and, if you have it, the medical payments coverage on your personal auto policy.
Personal Effects Coverage (PEC). Insurance for your belongings if they're stolen from the rental car. Usually already covered by your homeowner's or renter's insurance, though the deductible on those policies might make small claims not worth pursuing.
Roadside Assistance. Tire changes, jump-starts, lockouts. Usually duplicative of AAA, your existing auto policy's roadside coverage, or a credit card benefit.
What You Probably Already Have
Before you decide, three quick check-ins.
Your personal auto insurance policy. Call your carrier before you travel and ask specifically: does my policy extend to rental cars in the state or country I'm going to? What are my liability limits when I'm driving a rental? Does my collision and comprehensive coverage apply, and what's the deductible? Get the answer in writing if possible — email is fine.
Your credit card. The card you plan to use to pay for the rental almost certainly has some rental car coverage, but the terms vary enormously. Some cards offer primary coverage — their coverage pays first, before your personal insurance is touched. Others offer secondary coverage — theirs kicks in only after your personal insurance has paid. Some cover only CDW/LDW; a few cover liability too. Check the benefits guide before you travel, not at the counter.
Two additional wrinkles worth checking on the card. Most cards require that you decline the rental company's CDW/LDW and pay for the entire rental with that card for the benefit to apply. And most exclude luxury vehicles, cargo vans, exotic cars, motorcycles, and rentals in certain countries (Israel, Ireland, Jamaica, and a handful of others are the usual suspects).
Your homeowner's or renter's policy. Covers personal effects stolen from a rental car up to your policy limits, subject to your deductible.
When You Should Probably Buy
There are real scenarios where declining is the wrong call.
You don't own a car and don't carry personal auto insurance. Renting without any personal policy means you have no fallback if the rental company's minimum coverage isn't enough or if your credit card coverage has an exclusion. Buying at the counter is often the right call.
Your personal auto policy has low liability limits. California's minimum limits are now 30/60/15 — $30,000/$60,000 for bodily injury and $15,000 for property damage. Better than the old 15/30/5 they replaced in January 2025, but still genuinely inadequate for any serious injury claim. If state minimums are what you carry personally, the SLI upgrade at the counter is real protection worth paying for.
You're renting internationally. Coverage extension abroad is spotty and varies by carrier and country. Read your policy or, more realistically, call your carrier. When in doubt, buy the counter coverage.
You're renting for business. Most personal auto policies exclude commercial use of rental vehicles. If your work is paying for the rental, check whether your employer's insurance covers you — many corporate rental accounts include CDW/LDW automatically. If not, buying is sensible.
You're renting a luxury or specialty vehicle. Credit card coverage often excludes these. Personal auto policies sometimes do too.
You just don't want the hassle. This is a legitimate reason, and I've made this choice myself on trips where I didn't want to think about it. Peace of mind has a real dollar value.
When You Can Probably Skip It
If you own a car with a solid auto insurance policy — say, 100/300 liability or better, collision and comprehensive with a manageable deductible — and you have a credit card with primary rental coverage, you are probably paying for duplicative coverage at the counter. In that scenario, declining the CDW/LDW, SLI, PAI, and PEC is a reasonable choice.
Two things to know if you go that route.
Pay for the entire rental with the card that provides the coverage, and make sure you're the primary renter on the reservation. Both are common requirements for the card benefit to apply.
Understand that if damage occurs, the reimbursement process is genuinely more painful than paying at the counter. You'll pay the rental company up front, then file with your credit card or your personal auto insurance, then wait weeks or months for reimbursement. If cash flow around a $5,000 out-of-pocket loss is a problem for you, the counter coverage is worth paying for even if it's theoretically duplicative.
What Actually Happens in a Rental Car Crash
Now the part I actually think about the most, as a personal injury lawyer.
If you're in a serious crash in a rental car and someone is injured — you, a passenger, someone in another car — the coverage question is not clean. Multiple policies can apply, and the order in which they respond, and whose deductibles get paid first, and whose limits get eaten first, all determine what money is actually available to cover the injuries.
If you're the plaintiff — you were hurt in a rental car crash caused by someone else — the practical questions become: what insurance did the other driver carry? What insurance did the rental company provide? Does your uninsured/underinsured motorist coverage on your personal policy apply while you're in a rental? (Usually yes, but read the policy language.)
If you're the defendant — you were driving the rental and someone else was hurt — the practical questions multiply. Does the rental company's minimum coverage apply first, or does your personal policy? Does the SLI you bought at the counter apply on top of, or in place of, personal coverage? Whose deductibles are paid first, and by whom?
The Bottom Line
All of these layered questions really collapse into one:
Are you personally exposed to a judgment above whatever coverage is available?
Every layer of coverage — your personal auto policy, the rental company's minimum, the SLI you did or didn't buy at the counter, your credit card's benefits, your umbrella policy if you carry one — exists to answer that question in your favor. When those layers are enough, you go home, your insurance company handles the claim, and the worst case is a premium increase. When they aren't enough, you can be personally liable for the shortfall. In a serious injury case, that shortfall can reach your savings, your home equity, and years of future income.
That is why the SLI conversation at the counter is not the same as the CDW conversation. CDW covers a car. SLI covers the possibility that a bad afternoon puts everything you've built at risk.
So when you decide whether to buy SLI, think honestly about what "decent" liability limits actually mean for you. "Decent" for a state-minimum-policy driver (30/60/15) looks very different from "decent" for someone with a $1 million umbrella policy sitting behind their personal auto coverage.
Nevada County Wrinkles
Most Nevada County residents who rent cars are doing it at Sacramento International (SMF) or Reno-Tahoe International (RNO) — either heading somewhere on a trip, or picking up a car after a flight home. A few things worth knowing.
If you fly into Reno-Tahoe and rent a car to drive back into Nevada County — perhaps because your own car is in the shop, or you're bringing family in for a visit — you're using the rental across state lines. The coverage question I'd ask your carrier is specifically whether your personal auto policy covers rentals used in interstate travel between Nevada and California. It usually does, but confirming is cheap.
Same question if you fly into Sacramento International and rent a car to drive up Highway 49 into Grass Valley and Nevada City, or I-80 up to Truckee. Interstate rental use is generally covered but worth confirming.
If you're a visitor to Grass Valley, Nevada City, or Truckee — a wedding guest, a summer vacationer, a Bay Area weekender who flew rather than drove — and you're renting a car for the trip, the same analysis applies: what does your home-state personal auto policy cover, what does your credit card cover, and what gaps might justify buying at the counter.
If something goes wrong on the trip — a collision on Highway 49, a rear-end on I-80 near Truckee, a parking lot fender-bender in downtown Grass Valley — the coverage question follows you home. Nevada County personal injury claims involving out-of-state rental drivers, or Nevada County residents driving rentals, come up in my practice more often than most people realize.
What I Actually Do
For domestic trips, I decline the counter coverage. I have personal auto insurance with liability limits I trust, collision and comprehensive coverage, and a credit card that provides primary rental coverage. I pay for the rental with that card, I make sure I'm the primary renter, and I don't add the counter products.
For international trips, I usually buy at least the CDW/LDW at the counter. The coverage-extension questions abroad are complicated enough that the peace of mind is worth the daily rate.
For rentals where I'm not going to be the primary driver — a car for a family member, or one that a friend will be driving on the trip — I pay more attention to the SLI question, because personal auto liability coverage often turns on who is actually behind the wheel.
For any rental where I'm doing something unusual — a longer trip, a specialty vehicle, a rental for business — I call my insurance carrier before I go and ask them, in words, what's covered and what isn't. Fifteen minutes on the phone before the trip is worth avoiding a five-figure surprise after.
A Note on This Series
This is the first in a series I'm calling Law That Matters — plain-English answers to the legal questions that come up in ordinary life, from a Nevada County personal injury attorney who has been answering these questions for twenty-five years and is still, occasionally, standing at a rental counter wondering the same thing you are.
If there's a legal question you've been wondering about — something that happened, or something you're worried might happen — send it my way. I'll do my best to answer it in a future post.
Free consultations at (530) 265-0186. First conversation is always with me, not a screener.
This article is general legal information about California law and Nevada County practice. It is not legal advice, and reading it does not create an attorney-client relationship. Coverage under any specific insurance policy depends on the actual policy language and applicable state law. If you have questions about your own coverage, contact your insurance carrier or an attorney.