| States requiring liability insurance | 49 (New Hampshire is the primary exception, with alternative financial responsibility options) (State insurance regulatory agencies) |
| No-fault states (requiring PIP) | Approximately 12 states plus Washington D.C. (Insurance Information Institute) |
| Typical collision deductible range | $250–$2,000 (General industry range; varies by insurer and policy) |
| Coverage types in a standard policy | Liability, collision, comprehensive, UM/UIM, PIP or MedPay, gap (if applicable) |
| "Full coverage" is | An informal term — not a legally defined policy type |
The Coverage Types on a Standard Auto Policy
Most US auto insurance policies bundle several distinct coverage types under one premium. Each covers a different risk, and knowing what each one does — and doesn't — protect helps you evaluate whether your current policy reflects your actual exposure.
| States requiring liability insurance | 49 (New Hampshire is the primary exception, with alternative financial responsibility options) (State insurance regulatory agencies) |
| No-fault states (requiring PIP) | Approximately 12 states plus Washington D.C. (Insurance Information Institute) |
| Typical collision deductible range | $250–$2,000 (General industry range; varies by insurer and policy) |
| Coverage types in a standard policy | Liability, collision, comprehensive, UM/UIM, PIP or MedPay, gap (if applicable) |
| "Full coverage" is | An informal term — not a legally defined policy type |
Liability Coverage
Liability is the only coverage type required by law in nearly every US state. It pays for bodily injury and property damage you cause to others in an at-fault accident. It does not cover your own injuries or vehicle damage. Policies express liability limits in a three-number format — for example, 25/50/25 — representing maximum payouts (in thousands) for per-person injury, per-accident injury, and property damage, respectively. State minimums are often lower than what a serious accident actually costs, so many financial professionals suggest carrying limits above the statutory floor.
Collision Coverage
Collision pays to repair or replace your vehicle when it's damaged in an accident with another car or a stationary object, regardless of fault. It applies after you pay your deductible — a set dollar amount you choose when purchasing the policy. Higher deductibles reduce your premium but increase your out-of-pocket cost after a claim. Lenders typically require collision coverage on financed or leased vehicles.
Comprehensive Coverage
Comprehensive covers vehicle damage from causes other than a collision: theft, vandalism, weather events (hail, flooding), fire, and animal strikes. Like collision, it comes with a deductible. The two are often sold together and referred to collectively as "full coverage," though that phrase has no standard legal definition. To understand how ownership costs — including insurance premiums — vary by vehicle type, see our comparison of ownership costs across sedans, SUVs, trucks, and EVs.
Additional Coverages Worth Understanding
Uninsured and Underinsured Motorist Coverage
Uninsured motorist (UM) coverage protects you if you're hit by a driver who carries no insurance. Underinsured motorist (UIM) kicks in when the at-fault driver's liability limits aren't sufficient to cover your losses. Both are required in some states and optional in others. Given that a meaningful share of US drivers operate without adequate insurance, UM/UIM coverage is widely considered a practical safeguard rather than an optional add-on.
Personal Injury Protection and Medical Payments
Personal injury protection (PIP) — required in no-fault states — covers medical expenses, lost wages, and certain other costs for you and your passengers, regardless of who caused the accident. Medical payments (MedPay) is a narrower version covering only medical and funeral expenses; it's available in most states. Neither replaces health insurance but can help cover costs before other coverage applies.
Gap Coverage
Gap insurance (Guaranteed Asset Protection) addresses the difference between what your insurer pays if your vehicle is totaled — its actual cash value at the time of loss — and what you still owe on your loan or lease. Because new vehicles depreciate quickly, drivers who financed with a small down payment or have longer loan terms may owe more than the car is worth for the first few years of ownership.
Auto Insurance Is Not the Same as a Warranty
Auto insurance covers sudden, accidental losses — collisions, theft, weather damage. It does not cover mechanical breakdown, wear and tear, or failures from deferred maintenance. Those scenarios fall under a vehicle warranty or, in some cases, an extended service contract. For a clear breakdown of what extended coverage actually protects, see our guide to extended warranty myths.
How Safety Features Affect Premiums
Vehicles equipped with active safety technology — such as automatic emergency braking and lane-keeping assist — can influence insurance pricing, though the effect varies by insurer and vehicle. Our guide to modern car safety systems explains how these technologies work and what they protect against. For a broader look at whether your overall coverage still fits your situation, the insurance coverage audit guide offers a structured framework.