Car Insurance Coverage Guides
A standard U.S. auto policy is not one product; it is a bundle of distinct coverages, each with its own trigger, who it pays, limits, deductibles, and whether the state requires it. The guides below explain each component independently so you can read your own policy, decide what to carry, and understand which coverage pays when a specific loss happens.
Guides
Start with a coverage type
Coverage guide
Full coverage
What "full coverage" actually means (there is no legal definition), what it typically includes, who requires it (lenders, lessors), and when the requirement ends.
Read the guideCoverage guide
Comprehensive coverage
What comprehensive covers, when it is typically worth keeping, and how it interacts with the rest of your policy.
Read the guideCoverage guide
Liability coverage
What bodily injury and property damage liability actually pay for, how split limits are written, and how to separate the legal minimum from the personal risk decision.
Read the guideCoverage guide
Collision coverage
What collision covers, how it differs from comprehensive and liability, how deductibles and ACV work, and how to decide whether to keep it once your lender no longer requires it.
Read the guideCoverage guide
Uninsured / underinsured motorist coverage
What UM and UIM cover, how bodily injury and property damage parts differ, how state rules vary (required, required-offered, or optional), and how to decide the right limits.
Read the guideCoverage guide
Personal injury protection (PIP)
What PIP pays for (medical, and where offered, lost wages and essential services), how it relates to no-fault, how it differs from MedPay and health insurance, and how to decide limits.
Read the guideCoverage guide
Gap coverage
What gap coverage pays after a total loss, how the two forms (insurer endorsement vs dealer or lender GAP waiver) differ, and how to decide whether it fits your loan or lease.
Read the guideCoverage guide
Medical payments (MedPay)
What MedPay pays for (medical, ambulance, X-ray, dental, funeral) regardless of fault, how it differs from PIP, liability, UM/UIM and health insurance, how state rules vary, and how to decide limits.
Read the guideCoverage guide
New car replacement coverage
What new car replacement pays on a qualifying total loss, how it differs from gap coverage and from an ACV settlement, how insurer eligibility windows vary, and how to decide whether it fits your vehicle.
Read the guideCoverage guide
Rental reimbursement coverage
What rental reimbursement pays while your car is in the shop for a covered loss, typical daily and aggregate limits, and when a lower-cost ride-share alternative is enough.
Read the guideCoverage guide
Roadside assistance
Towing, jump-starts, lockouts, flat tires, and fuel delivery. The three ways to buy roadside (policy endorsement, AAA-style membership, credit-card or OEM benefit) and which fits.
Read the guideCoverage guide
SR-22 insurance explained
SR-22 is a certificate of financial responsibility filed with the state DMV, not a coverage. Who needs it, how FR-44 differs in Florida and Virginia, and what it actually costs.
Read the guideCoverage guide
FR-44 insurance (FL and VA)
The Florida- and Virginia-only variant of SR-22 that requires double the state-minimum liability. Trigger events, filing cost, and how it differs from SR-22.
Read the guideCoverage guide
Non-owner car insurance
Liability coverage that follows the driver instead of a vehicle. $200 to $600 per year clean record; three legitimate use cases, what it does not cover.
Read the guideCoverage guide
Accident forgiveness
Prevents a surcharge after your first at-fault accident but does not forgive the deductible, pay the other party, or remove the accident from your record. Program-by-program breakdown.
Read the guideCoverage guide
Named driver exclusion
A formal endorsement that removes one household driver from coverage entirely. The excluded driver has zero coverage behind your wheel. Prohibited in VA, NY, NC, KS, MA, WI.
Read the guideCoverage guide
Custom equipment coverage
Default coverage for aftermarket parts is only $1,000 to $1,500. Endorsement tiers of $5K / $10K / $20K run $20 to $150 per year. What qualifies and what does not.
Read the guideCoverage guide
OEM parts coverage
Guarantees factory-original replacement parts after a collision claim. Liberty Mutual and Erie include it; most carriers sell it as a $30 to $75 per year endorsement. ADAS calibration implications.
Read the guideCoverage guide
Mechanical breakdown insurance (MBI)
Pays for mechanical failure from normal wear, not from a collision. GEICO, Mercury, and State Farm market MBI; must be added early (typically under 15 months old and 15,000 miles). $30 to $100 per year. How it differs from an extended warranty.
Read the guideCoverage guide
Personal umbrella insurance
Adds liability coverage above your auto and homeowners limits, typically $1M to $5M. $150 to $500 per year per $1M. Underlying-limit requirements and when the premium is worth it.
Read the guideCoverage guide
Vanishing deductible
Claim-free reward feature that shrinks your deductible each year. Nationwide, Progressive, Allstate, and Hartford AARP operate the four mainstream programs. Does the math work?
Read the guideCoverage guide
Glass and windshield coverage
Paid by comprehensive in most states. Florida, Kentucky, and South Carolina require zero-deductible glass. OEM vs aftermarket, ADAS recalibration, and when to buy a full-glass endorsement.
Read the guideCoverage guide
Collision vs comprehensive
Side-by-side event matrix: which coverage pays for which real-world event (hitting another vehicle, hail, flood, deer strike, vandalism, tree, animal strike). Classifications sourced to ISO Personal Auto Policy and III.
Read the guideCoverage guide
MedPay vs PIP
Comparison matrix: medical bills, lost wages, funeral costs, passenger coverage, fault dependency, deductible options, state availability. PIP is mandatory in no-fault states; MedPay is optional nationwide.
Read the guideCoverage guide
Gap vs new-car replacement
What each pays after a covered total loss on a financed car. Worked example comparing ACV baseline, gap shortfall coverage, and new-car replacement which pays for a brand-new comparable vehicle instead of ACV.
Read the guideCoverage guide
Rental reimbursement vs rental-car insurance
They sound similar but solve different problems. Rental reimbursement pays for a rental while YOUR insured car is in the shop after a covered loss. Rental coverage is your auto policy extending to a car you rent plus the rental agency CDW/LDW.
Read the guideWho pays, when
How the core coverages fit together
Each line on your declarations page pays for a different loss. The matrix below is the shortest useful reading of who pays whom, when. Each row links to the full guide.
| Coverage | Pays for | Required? |
|---|---|---|
| Liability (BI + PD) | The other party’s injuries and property damage when you cause a crash, up to limits. | Required in every state except New Hampshire, which allows alternative financial responsibility. |
| Collision | Damage to your car from a crash, up to ACV minus your deductible. | Not required by any U.S. state. Lenders and lessors require it while a loan or lease is in force. |
| Comprehensive | Non-collision damage to your car (theft, hail, vandalism, animal strike, glass), up to ACV minus deductible. | Not state-required. Lender/lessor-required with a loan. |
| UM / UIM | Your injuries (and sometimes vehicle damage) when the at-fault driver has no insurance or insufficient limits. | Required, required-to-be-offered, or optional depending on state. |
| PIP / MedPay | First-party medical bills (and in some PIP states lost wages) regardless of fault. See the state guides for mandatory vs optional treatment. | PIP is mandatory in no-fault states (e.g. New York) and offered-with-rejection in others (e.g. Texas). MedPay is optional. |
| Gap | The difference between ACV and the loan balance when a financed vehicle is a total loss. | Optional add-on; usually only sensible while the loan balance exceeds the vehicle ACV. |
For how the policy pays in a specific scenario, see the decision guides: how to choose coverage limits, and when to drop collision and comprehensive. For a state-by-state view of which coverages are mandatory, see the state guides.
Coverage decisions
Deciding what to carry
Coverage decisions are the output of three questions: what does my state require, what does my lender require while a loan is open, and what level of first-party risk am I willing to carry myself. The decision guides below address each.
- How to choose coverage limits. Framework for sizing bodily-injury and property-damage liability relative to household assets, and for sizing UM/UIM alongside.
- When to drop collision and comprehensive. Decision framework for older vehicles once the loan is paid off: when the premium approaches a large share of ACV, the economics shift.
- What “full coverage” actually means. “Full coverage” is a shopper shorthand, not a product. This guide names which coverages that term usually implies and where it fails as shorthand.
- How to read an auto insurance policy. What to look for on the declarations page and the policy jacket to confirm each coverage is actually in force at the limits you expect.
How we cover it
What every coverage guide answers
- What it is. The specific loss the coverage pays for.
- What it does not cover. Common misconceptions and exclusions.
- Required or optional. Whether the coverage is legally required or an optional add-on.
- How it interacts with other coverage. Its relationship with health insurance, PIP, and MedPay.
- How state law shapes it. Where state rules materially change the answer.
- When it is typically worth keeping. The practical value trade-offs.
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