Comprehensive coverage is often described as covering everything, which is the opposite of what it does. It is defined by the losses it responds to and excludes collision entirely.
It covers loss other than collision
The coverage responds to theft, fire, vandalism, falling objects, hail and other weather damage, glass breakage and contact with animals.
Striking a deer is a comprehensive claim. Swerving to avoid one and hitting a tree is a collision claim, because the loss came from impact with an object.
That distinction determines which deductible applies and, on some policies, how the claim is treated in future rating. It is worth knowing before reporting a loss.
The deductible is chosen, not fixed
Policyholders select a comprehensive deductible, and the premium falls as the deductible rises because the insurer's exposure on small claims shrinks.
Many policies apply a separate and lower deductible to glass repair, or waive it for windshield repair rather than replacement, since repairing a chip is far cheaper than replacing the glass.
Glass rules vary by state and by insurer. Some jurisdictions require specific treatment of windshield claims, which affects both coverage and premium.
Payment is based on actual cash value
A total loss is settled at the vehicle's value immediately before the loss, less the deductible, rather than at what replacing it would cost today.
That figure reflects age, mileage and condition. On a financed vehicle it can fall below the loan balance, which is the gap that separate loan coverage addresses.
Disputes usually concern valuation rather than coverage. Policies typically describe an appraisal process for resolving a disagreement over the amount.
Lenders require it, owners choose it
Financed and leased vehicles almost always require comprehensive and collision coverage, because the lender has an interest in the vehicle itself.
Once a vehicle is owned outright, keeping the coverage becomes a judgment about the car's value against the annual premium and deductible.
The calculation turns on the maximum the insurer would ever pay. On a low-value vehicle, the combined premium and deductible can approach that ceiling.
Exposure matters too. A car parked outdoors in a hail-prone or flood-prone area carries a different risk than the same car garaged elsewhere.
Some losses are excluded regardless
Wear, mechanical breakdown, and damage from failing to maintain the vehicle are not covered. Personal property inside the car is usually a homeowners or renters matter instead.
Rodent damage, in contrast, is often covered as comprehensive, which surprises owners who assume it falls outside the policy.
Coverage language and state requirements differ, so the policy itself and the current rules in the relevant state are what govern any particular claim.