Last reviewed: October 2026 · By the SmartCoverage Editorial Team · How we research
Liability-only insurance pays for the damage you do to other people. Full coverage adds collision and comprehensive, which pay for damage to your own car. The difference in price is large: in Insurance.com’s 2026 data, full coverage averaged $2,578 a year against $738 for a state-minimum liability policy, a gap of $1,840.
So the real question is not which is better, but whether your car is still worth insuring against your own accidents. If it is financed or leased, you have no choice. If it is paid off, the answer depends on its value, the price gap and your savings, and the calculator below works it out.
Who pays for what
The easiest way to see the difference is to run through common situations:
“Full coverage” is not a single product, just a common name for liability plus collision plus comprehensive. Your state may also require personal injury protection (PIP) or uninsured motorist coverage on top. A guide from the Washington State Office of the Insurance Commissioner explains each coverage in plain language.
Run the numbers for your car
Is full coverage still worth it on your car?
Enter your car’s current value and the two prices from your insurer: one with full coverage and one with liability only. The figures shown are only an example; replace them with your own.
The most collision coverage can pay is roughly your car’s actual cash value minus your deductible. This tool ignores injuries, rental cars and other extras, and it assumes the car is not totalled more than once. Results are for guidance only.
The 10% rule, and its limits
A widely used rule of thumb says that if collision and comprehensive cost more than about 10% of your car’s actual cash value each year, dropping them may make financial sense. The logic is simple: the most they can ever pay is the car’s value minus your deductible, and that payout shrinks every year as the car ages.
The rule leaves out two things. The first is your savings. If losing the car tomorrow would leave you unable to get to work, paying for full coverage can be worth more than the math suggests. The second is your risk: a driver who parks on the street in a high-theft area, or lives where hail and deer are common, uses comprehensive far more than one who garages the car in a quiet suburb.
When you should keep full coverage
- The car is financed or leased. The lender requires collision and comprehensive until it is paid off. If you owe more than the car is worth, gap insurance covers the difference.
- The car is newer or worth more than you could replace from savings.
- You rely on the car for work and could not quickly pay for repairs or a replacement.
- You drive a lot or in risky conditions, such as long commutes, heavy traffic or areas with frequent hail, flooding or theft.
When liability only makes sense
- The car is paid off and worth only a few thousand dollars.
- The extra cost of full coverage is above roughly 10% of the car’s value per year.
- You have enough savings to repair or replace the car if something happens.
- You have a second car you could use, or rarely drive this one.
Options between the two
It does not have to be all or nothing. Three middle-ground choices can cut the price while keeping some protection:
- Raise the deductible from $500 to $1,000 or more. You pay more of a claim yourself, but the premium falls.
- Keep comprehensive, drop collision. Comprehensive is usually the cheaper of the two and still covers theft, fire, hail, flooding and animal strikes.
- Keep strong liability and uninsured motorist cover even if you drop full coverage. According to the Insurance Research Council, 15.4% of US drivers were uninsured in 2023, and more than one in five in some states.
Whatever you choose, do not cut liability limits to the state minimum just to save money. If you cause a serious crash, you are personally responsible for costs above your limits. To see what the change does to your bill, follow our guide to getting comparable quotes, and if price is the main issue, compare insurers with our best car insurance companies shortlist.
Quick answers
Is full coverage required by law?
No. States require liability insurance (and sometimes PIP or uninsured motorist coverage), not collision or comprehensive. Lenders and leasing companies require full coverage, not the state.
Does liability insurance cover my car if someone else hits me?
Your own liability policy does not. The other driver’s liability insurance should pay for your repairs if they are at fault. If they are uninsured or flee the scene, you need uninsured motorist coverage or collision coverage to be paid.
How much does full coverage cost in my state?
It varies a lot. Insurance.com’s 2026 averages range from $1,660 a year in Vermont to $3,999 in Louisiana for the same driver profile.
Sources
- Insurance.com: How much is full coverage insurance in 2026? (updated September 2026)
- Washington State Office of the Insurance Commissioner: How auto insurance works
- Insurance Research Council: Uninsured motorists, 2023 estimates (February 2025)
This guide is for informational purposes only and is not insurance advice. Required coverages, prices and policy terms vary by state and insurer. Check your policy and speak to your insurer or a licensed agent before changing your coverage.