Auto
How Auto Insurance Works
U.S. auto policies usually mix liability with optional physical-damage coverages. This guide walks through the main parts of a car insurance contract in everyday language.
By Averainsure Editorial Team. Published April 2, 2026. Updated August 6, 2026.
Car insurance is a contract that may pay certain costs if you injure someone, damage property, or damage your own vehicle — depending on what you buy and what the policy says. Minimums are set by each state, not by Averainsure.
Liability: protecting others
Bodily injury liability can help with others’ medical costs when you are at fault. Property damage liability can help repair someone else’s vehicle or property. These parts generally do not pay to fix your own car.
States require minimum liability limits. Those floors can be far below the cost of a serious injury claim. Buying higher limits costs more and still does not guarantee every loss is covered.
Collision and comprehensive
Collision can help repair or replace your vehicle after a crash — including single-vehicle accidents — usually after a deductible. Comprehensive can help with non-crash events such as theft, vandalism, hail, or hitting an animal, also typically after a deductible.
Other coverages you may see
Uninsured and underinsured motorist coverage, medical payments or personal injury protection (PIP), and roadside extras show up on many policies. PIP and no-fault rules are highly state-specific. Florida, Michigan, New York, and others have distinct frameworks that this overview cannot replace.
What often shapes the price
Insurers may weigh driving record, vehicle, location, coverage choices, deductibles, mileage, and — where allowed — credit-based insurance scores or other factors. California, Hawaii, Massachusetts, and some other states restrict certain rating inputs. Treat calculator results as educational ranges, not offers.