| Liability coverage requirement | Required in 49 US states (New Hampshire allows a financial responsibility alternative) |
| Collision coverage requirement | Not required by state law; required by most lenders |
| Comprehensive coverage requirement | Not required by state law; required by most lenders |
| Uninsured drivers estimate | Approximately 1 in 8 US drivers (Insurance Research Council national estimates) |
| PIP requirement | Mandatory in no-fault states (Approximately 12 states operate under no-fault rules) |
| Liability limit format | Split limit or single combined limit |
The coverage types every driver should know
Car insurance is not a single product. A standard auto policy is a bundle of separate coverage types, each paying for a different category of loss. Knowing what each one does helps you read a policy accurately and avoid gaps in protection. For a side-by-side comparison, see Auto Insurance Coverage Types Laid Out Side by Side.
| Liability coverage requirement | Required in 49 US states (New Hampshire allows a financial responsibility alternative) |
| Collision coverage requirement | Not required by state law; required by most lenders |
| Comprehensive coverage requirement | Not required by state law; required by most lenders |
| Uninsured drivers estimate | Approximately 1 in 8 US drivers (Insurance Research Council national estimates) |
| PIP requirement | Mandatory in no-fault states (Approximately 12 states operate under no-fault rules) |
| Liability limit format | Split limit or single combined limit |
Six coverage types appear on most personal auto policies in the US. Some are required by state law; others are optional. The sections below explain each one plainly.
Liability coverage
Bodily injury liability pays for injuries to other people when you are legally responsible for an accident. It covers the other driver, passengers, and pedestrians, not you or anyone in your vehicle. Property damage liability pays to repair or replace another person's vehicle or property you damage.
Every US state except New Hampshire requires some minimum level of liability coverage. State minimums are often low; a serious accident can exceed them quickly, leaving you personally responsible for the difference. Liability coverage is expressed as a split limit (e.g., 25/50/25) or a single combined limit.
This article provides general insurance information for educational purposes only, not personalized legal or financial advice. Coverage terms and state requirements vary. Read your policy documents and consult a licensed insurance agent for guidance specific to your situation.
Collision and comprehensive coverage
Collision coverage pays to repair or replace your vehicle after a crash with another car or object, regardless of who caused the accident. A deductible applies: you pay that amount first, and the insurer covers the rest up to your vehicle's actual cash value.
Comprehensive coverage pays for damage to your vehicle from causes other than a collision. This includes theft, fire, flooding, hail, falling objects, and animal strikes. A separate deductible typically applies.
Neither coverage is required by state law, but lenders and leasing companies almost always require both when you finance or lease a vehicle. For a deeper look at how these two types interact and when each applies, see Comprehensive vs. Collision Coverage: Choosing the Right Protection. A vehicle's title status can also affect its insurability; Understanding Your Car Title: Types, Transfers, and What Each Status Means covers how salvage or rebuilt designations factor into coverage decisions.
Uninsured and underinsured motorist coverage
Uninsured motorist (UM) coverage pays for your injuries and, in some states, your vehicle damage when the at-fault driver has no insurance. Underinsured motorist (UIM) coverage applies when the at-fault driver has insurance but not enough to cover your losses.
More than one in eight US drivers carried no insurance, according to the Insurance Research Council's most recently published national estimates. UM/UIM coverage is required in roughly half of US states and optional in the rest. It is generally inexpensive relative to the protection it provides.
Medical payments and personal injury protection
Medical payments (MedPay) coverage pays medical expenses for you and your passengers after an accident, regardless of fault. It applies to hospital bills, surgery, and X-rays up to the policy limit.
Personal injury protection (PIP) is a broader version of MedPay available in no-fault states. In addition to medical expenses, PIP can cover lost wages, rehabilitation costs, and in some states, funeral expenses. PIP is mandatory in states with no-fault auto insurance laws.
Neither MedPay nor PIP replaces health insurance; they work alongside it to cover accident-related costs that may not be immediately picked up by a health plan.
Actual cash value (ACV)
The market value of your vehicle at the time of a loss, accounting for depreciation. Insurers use ACV to determine payout on total-loss claims under collision and comprehensive coverage.
Deductible
The amount you pay out of pocket before your insurance coverage pays on a claim. Higher deductibles generally lower your premium.
No-fault insurance
A state system where each driver's own insurance pays for their injuries after an accident regardless of who caused it. No-fault states require personal injury protection (PIP).
Split limit
A way of expressing liability coverage as three separate numbers: per-person bodily injury limit, per-accident bodily injury limit, and property damage limit (e.g., 25/50/25 in thousands of dollars).
Premium
The amount you pay, typically monthly or semi-annually, to keep your insurance policy active.
Gap coverage
Optional coverage that pays the difference between a vehicle's actual cash value and the remaining loan or lease balance when the car is declared a total loss.
Optional and add-on coverages
Beyond the core types, insurers offer several add-ons worth understanding. Rental reimbursement pays for a rental vehicle while your car is being repaired after a covered claim. Roadside assistance covers towing, flat tire service, and lockout help. Gap coverage (also called loan/lease payoff) pays the difference between your vehicle's actual cash value and the remaining loan or lease balance if the car is totaled; this matters most in the first few years of ownership when depreciation outpaces loan payoff.
Some drivers also consider new car replacement coverage, which pays to replace a totaled vehicle with a comparable new model rather than paying out actual cash value. Availability and exact terms vary by insurer and state, so review policy language carefully before purchasing. For broader context on how different insurance types are structured, The Complete Picture of Home Insurance offers a useful comparison with how property policies handle inclusions and exclusions.