This is general, educational information to help you understand common auto insurance terminology — not personalized financial or insurance advice. Requirements and coverage options vary by location and by insurer.
The three main coverage types
Liability coverage pays for injury or damage you cause to other people or their property in an accident you're at fault for — it does not cover your own vehicle's damage or your own injuries. In most places with mandatory auto insurance, some level of liability coverage is the legal minimum requirement.
Collision coverage pays for damage to your own vehicle from a collision, regardless of who was at fault, subject to your deductible.
Comprehensive coverage pays for damage to your own vehicle from causes other than a collision — theft, vandalism, weather damage, hitting an animal — again subject to your deductible.
"Full coverage" isn't a technical term
"Full coverage" is commonly used to describe a policy that includes liability, collision, and comprehensive together, but it's not a standardized, legally defined term — what's actually included, and at what coverage limits, varies by insurer and by the specific policy. It's worth reviewing the actual coverage types and limits on a policy directly rather than relying on the term "full coverage" alone to know what's covered.
Deductibles work the same way as other insurance
Choosing a higher deductible on collision and comprehensive coverage lowers the premium, since you're agreeing to cover more of a claim yourself before insurance pays the rest — this is the same premium-vs-deductible tradeoff that applies to health and home insurance. The right deductible level depends on how much you could comfortably pay out of pocket if a claim happened, not just which option has the lowest monthly premium.
Coverage needs change with the vehicle's value
Collision and comprehensive coverage protect the vehicle's own value, which depreciates over time — for an older vehicle worth relatively little, the annual premium for collision and comprehensive coverage can approach or exceed what the vehicle itself would be worth in a total-loss payout, at which point dropping that coverage (while keeping required liability coverage) becomes a genuine option worth calculating, not just an oversight.
The one thing people forget
Review coverage after any major life change — a new car, a change in how much you drive, a new driver added to the household — rather than letting a policy renew unchanged indefinitely. Circumstances that affect actual risk and coverage needs change more often than most people update their policy to reflect.