Most drivers already have some rental car coverage — from their personal auto policy, a credit card, or both. The rental company's optional coverage (CDW/LDW) fills gaps but costs $15–$35/day. Before paying at the counter, check what you already have: your personal auto policy typically extends to rentals, and many travel credit cards include primary or secondary rental collision coverage at no extra charge.
When you rent a car, the counter agent will offer several optional coverages. Whether you need them depends on what coverage you already carry. Most U.S. drivers have at least two layers of protection they're not aware of — and buying the rental company's coverage on top is often redundant.
Collision Damage Waiver (CDW) and Loss Damage Waiver (LDW) are the two most commonly offered rental company add-ons. Despite the name, they are not technically insurance products — they are contractual waivers in which the rental company agrees not to hold you liable for damage to or theft of the vehicle. A CDW/LDW typically costs $15–$35 per day and covers the rental vehicle itself. It usually does NOT cover: liability for damage to other vehicles or property, personal injury, or personal belongings in the car. The Insurance Information Institute (III) notes that CDW/LDW pricing and coverage terms vary by rental company and state.
Most CDW/LDW waivers exclude: off-road driving, driving under the influence, intentional damage, and unauthorized drivers. Review the waiver terms before signing — exclusions can void coverage retroactively.
If you carry comprehensive and collision coverage on your personal auto policy, that coverage typically extends to rental cars in the United States — the rental vehicle is treated as a temporary substitute. This means: if you damage the rental car, your insurer pays (minus your deductible) just as it would for your own vehicle. Liability coverage from your personal policy also follows you into a rental. However: (1) your personal policy deductible applies; (2) a claim will affect your loss history; and (3) extension to rentals is not automatic in all policies — verify with your carrier. If you carry only liability coverage (no comprehensive or collision), your personal policy does NOT cover damage to the rental car itself.
The CFPB's auto insurance resources recommend confirming your specific policy's rental extension terms with your insurer before traveling, rather than assuming coverage applies.
Many travel credit cards include auto rental collision damage coverage as a cardholder benefit — at no additional cost — when you pay for the entire rental with the card and decline the rental company's CDW/LDW. There are two levels of coverage:
Credit card rental benefits typically exclude: liability coverage (damage to other cars or property), personal injury, and specialty vehicles (luxury cars, trucks, motorcycles, cargo vans). Coverage also typically does not apply in certain countries — check your cardmember agreement for geographic restrictions. The CFPB advises consumers to review their specific card's benefits guide, as terms vary significantly by issuer and can change at card renewal.
If you don't own a car and have no personal auto policy — and no credit card with rental coverage — you have two options for protecting yourself when renting. First, a non-owner auto insurance policy provides liability coverage (not collision) when you drive vehicles you don't own, including rentals. Non-owner policies are generally less expensive than standard personal auto policies. Second, some standalone short-term rental insurance products exist, but availability varies and they are not offered by most major carriers. In the absence of other coverage, purchasing the rental company's CDW/LDW is the most straightforward way to protect against damage liability on the vehicle itself.