Liability vs. full coverage, explained
"Full coverage" isn't an official insurance term — it's shorthand for a bundle of coverages layered on top of the liability insurance every state requires.
What liability-only actually pays for
Liability coverage pays for the other driver's car and medical bills when you're at fault. It does not pay a cent toward repairing or replacing your own vehicle, no matter who caused the accident.
What full coverage adds
Full coverage typically bundles liability with collision (pays for your car after an at-fault accident) and comprehensive (pays for non-collision damage — theft, weather, animals). Lenders almost always require both if the car is financed or leased.
When liability-only is a real gap
If your car is worth $15,000 and you total it in an at-fault accident with liability-only coverage, you receive nothing toward a replacement — you're paying insurance premiums for years while carrying the full financial risk of your own vehicle.
When liability-only can make sense
For an older car worth a few thousand dollars, the math sometimes flips: if a year of collision/comprehensive premiums plus the deductible approaches the car's actual value, self-insuring that portion (dropping to liability-only and setting aside the savings) can be the more rational choice.