Start Here: The Decision Framework
Instead of memorizing definitions, start by locating yourself in this table. Every recommendation below is built around it. Detailed profile explanations and add-on rules follow in later sections.
| Driver profile | Recommended liability (BI/PD) | UM/UIM | Physical damage | Add-ons worth buying |
|---|---|---|---|---|
| Young / low-asset (under 25) | 50/100/50 | Match liability | Only if car worth $4,000+ | Roadside (if not elsewhere) |
| Typical homeowner | 100/300/100 | 100/300 | Collision + comp, $500 to $1,000 deductible | Rental reimbursement, roadside |
| High-asset household | 250/500/100 + umbrella | 250/500 | Collision + comp, $1,000 deductible | Rental, OEM parts |
| Families with teen drivers | 250/500/100 | Match liability | Full coverage on all cars | Rental, roadside |
| Brand-new financed car | 100/300/100 | 100/300 | Required by lender | Gap, new car replacement, OEM |
| Leased vehicle | 100/300/100 (or per lease) | Match liability | Required by lease | Gap (often required) |
| Older paid-off car (under $5k) | 100/300/100 | 100/300 | Consider dropping (10% rule) | Roadside only |
| High-uninsured-motorist state | Same as asset level | Match liability | Based on car value | Rental |
Nationally, full coverage (liability plus collision plus comprehensive) averages roughly $2,000 to $2,700 per year in 2026, while minimum liability-only sits closer to $640 to $900 per year according to ValuePenguin, Forbes Advisor, and Cinco Insurance. Where you land inside that range depends on which coverages you pick and how high you set your limits.
The Six Coverages Every Policy Is Built On
These six blocks appear on nearly every auto policy in the country. What changes is the mix, the limits, and whether they are required or optional in your state.
Bodily Injury Liability (BI)
Pays for injuries you cause to other people (medical bills, lost wages, pain and suffering, and your legal defense if sued). Required in every state except Florida (uses PIP) and New Hampshire. Typical cost: $30 to $50 per month at 100/300 limits.
Who most needs high limits: Anyone with assets, retirement savings, or future wages a court could pursue.
Property Damage Liability (PD)
Pays for damage you cause to someone else's property (vehicles, fences, buildings, poles). Required in every state except New Hampshire. Typical cost: $10 to $20 per month at $50,000 to $100,000 limits. With new-vehicle average transaction prices above $49,000, low PD limits are one of the fastest ways to end up personally sued. Our deeper dive into property damage liability coverage shows why $50,000 is the practical floor.
Collision Coverage
Pays to repair or replace your car after any crash, regardless of fault, minus your deductible. Not required by any state, but required by every lender and lessor. Typical cost: $50 to $80 per month.
Who most needs it: Drivers of newer or financed vehicles. For older cars, our guide on when to drop full coverage walks through the math.
Comprehensive Coverage
Pays for non-crash damage: theft, vandalism, hail, fire, floods, falling trees, and animal strikes. Optional by law, but required by lenders. Typical cost: $15 to $35 per month, heavily influenced by ZIP-code theft and weather risk. Our full explainer on comprehensive car insurance covers what is and is not included.
Uninsured / Underinsured Motorist (UM/UIM)
Pays for your injuries, and sometimes your car, when the at-fault driver has no insurance, not enough insurance, or fled the scene. Required in about 20 states; offered but declinable in most others. Typical cost: $5 to $15 per month.
Who most needs it: Every driver, especially in states where roughly one in seven drivers is uninsured.
PIP and MedPay
Both pay medical costs for you and your passengers regardless of fault. PIP is broader (often including lost wages and rehab); MedPay is narrower and medical-only. PIP is required in 12 no-fault states including Florida, Michigan, New York, New Jersey, Pennsylvania, and Massachusetts.
The 5 Optional Add-Ons and Whether They Earn Their Keep
Add-ons are usually inexpensive individually but can add $200 to $400 per year to your premium if you buy them all. Here is a "buy / skip / maybe" verdict for each.
1. Gap Insurance, Buy for most financed and leased cars
Pays the difference between your loan balance and your car's actual cash value after a total loss or theft. New cars often lose 20% of their value the moment you drive off the lot, so financed vehicles frequently sit "underwater" for 2-3 years.
- Cost: $20 to $40 per year through your insurer (versus $400 to $1,000+ at a dealership).
- Buy if: You put less than 20% down, financed for more than 60 months, rolled negative equity into the loan, or are leasing.
2. Rental Reimbursement, Maybe
Pays for a rental car (typically $30 to $50 per day, up to 30 days) while yours is being repaired after a covered claim.
- Cost: $2 to $8 per month.
- Buy if: You own only one vehicle and cannot function without it for a week.
3. Roadside Assistance, Usually skip
Covers towing, jump starts, tire changes, lockouts, and fuel delivery.
- Cost: $1 to $5 per month.
- Skip if: You already have this through AAA, a credit card, your cell carrier, or a newer car's factory warranty. Note that this is not the same as mechanical breakdown coverage, which pays for engine and transmission failures.
4. New Car Replacement, Buy for brand-new cars only
Pays for a new equivalent vehicle (not a depreciated one) if your car is totaled, usually in the first 2 model years or 15,000 miles.
- Cost: Adds 5 to 10% to your collision premium.
- Buy if: You just took delivery of a brand-new car and depreciation would sting.
5. OEM Parts Coverage, Maybe
Guarantees repairs use factory (OEM) parts rather than aftermarket alternatives.
- Cost: $30 to $60 per year.
- Buy if: You own a newer, higher-end, or leased vehicle where fit-and-finish or resale matter.
What Is Actually Required by Law in 2026
No state requires collision or comprehensive coverage. What is mandated varies significantly. A few 2026 updates worth knowing:
- California: minimum liability increased to 30/60/15 (up from 15/30/5).
- New Jersey: minimum liability increased to 35/70/25 as of January 2026.
- Hawaii: minimum liability increased to 40/80/20 in 2026.
- Florida: still requires PIP ($10,000) and PD ($10,000) but not BI liability.
- New Hampshire: still does not require auto insurance at all, though drivers must prove financial responsibility.
- No-fault PIP states: Florida, Hawaii, Kansas, Kentucky, Massachusetts, Michigan, Minnesota, New Jersey, New York, North Dakota, Pennsylvania, and Utah.
If you finance or lease, your contract almost always overrides your state minimums. Lenders typically require 100/300/100 liability plus collision and comprehensive. See our guide on what car lenders require for the details.
2026 Cost Snapshot at a Glance
| Coverage type | Typical monthly cost | Required? |
|---|---|---|
| Bodily injury liability | $30 to $50 | Yes (49 states) |
| Property damage liability | $10 to $20 | Yes (49 states) |
| Collision | $50 to $80 | Only if financed/leased |
| Comprehensive | $15 to $35 | Only if financed/leased |
| UM/UIM | $5 to $15 | Required in ~20 states |
| PIP | $10 to $30 | Required in 12 states |
| MedPay | $5 to $10 | Optional everywhere |
| Gap insurance | $2 to $5 | Sometimes required on leases |
| Rental reimbursement | $2 to $8 | Optional |
| Roadside assistance | $1 to $5 | Optional |
| New car replacement | Adds 5-10% to collision | Optional |
| OEM parts | $3 to $5 | Optional |
Building Your Personal Coverage Stack
Here is a practical way to sequence the buying decisions once you know your profile.
If you are brand new to auto insurance and want a full walkthrough before shopping, start with our car insurance beginner's guide. If you need help decoding limit notation (like 100/300/100), our car insurance terms glossary is a good next step. And if you want to see how these coverages play out in real accident scenarios, our companion piece on what car insurance actually covers walks through several claim examples. Finally, before making downgrade decisions, check the risks outlined in our guide on car insurance coverage downgrades.
Frequently Asked Questions
How many types of car insurance coverage do I actually need?
At minimum you need liability (BI and PD) plus whatever else your state and lender require. Most drivers benefit from adding UM/UIM, comprehensive, and collision, plus either PIP or MedPay. That gets you to five or six of the eight coverage types most policies offer. Everything else (gap, rental, roadside, new car replacement, OEM parts) is a personal choice based on your car and lifestyle.
What is the difference between full coverage and liability-only?
Liability-only pays only for damage you cause to others. Full coverage is an informal industry term for a policy that also includes collision and comprehensive, protecting your own car. Full coverage typically costs three to four times more than liability-only, but it is the only way to get your car repaired if you are at fault or if it is stolen or damaged by weather. Our full coverage explainer breaks down exactly what is included.
Is uninsured motorist coverage really necessary if I have good health insurance?
Yes, in most cases. Health insurance does not pay for your lost wages, pain and suffering, or vehicle damage, and it comes with deductibles and copays that can add up quickly after a serious crash. UM/UIM fills all of those gaps and typically costs only $5 to $15 per month. In states where a large share of drivers are uninsured, skipping it is one of the riskiest cost-cutting moves you can make.
Should I buy gap insurance from the dealership or my auto insurer?
Almost always from your auto insurer. Dealer gap policies commonly cost $400 to $1,000 and get rolled into your loan, meaning you pay interest on them for years. Adding gap to your existing auto policy typically costs just $20 to $40 per year and can be dropped once you no longer owe more than your car is worth.
When can I safely drop collision and comprehensive coverage?
The most widely used rule of thumb is the 10% rule: if the combined annual cost of collision and comprehensive plus your deductible approaches 10% of your car's market value, the coverage may no longer be cost-effective. That threshold usually kicks in when a paid-off car falls below roughly $4,000 to $5,000 in value. Keep your liability, UM/UIM, and PIP or MedPay at strong levels even after dropping physical damage coverage.

