If you've ever shopped for car insurance in California, you've probably been asked some version of the question: do you want liability only, or full coverage? It sounds simple. It isn't.
The right answer depends on your car, your finances, and your tolerance for risk. Here's what each option actually means, and how to figure out which one fits you.
What "liability only" actually covers
Liability insurance pays for damage you cause to other people. If you rear-end someone, your liability covers their medical bills and the damage to their car, up to your policy limits.
California requires every driver to carry at least the state minimum, which is currently 15/30/5: $15,000 per person for bodily injury, $30,000 per accident, and $5,000 for property damage.
Those numbers haven't been updated in decades, and they are dramatically too low for modern medical costs and vehicle prices. A serious accident can easily exceed all three limits.
What liability does NOT cover
- Damage to your own vehicle
- Your own medical bills
- Theft of your vehicle
- Vandalism, weather damage, fire, falling objects
- Anything that happens to your car when it's parked
If a tree falls on your car overnight and you only have liability, you pay for the repair yourself.
What 'full coverage' actually means
Full coverage isn't an official insurance term. It's shorthand for liability plus collision plus comprehensive.
Collision coverage
Pays for damage to your car when you hit something. Another car, a wall, a tree, a pothole big enough to count. It applies whether the accident was your fault or not.
Comprehensive coverage
Pays for damage to your car from non-collision events. Theft, vandalism, fire, hail, falling objects, hitting an animal.
Both have deductibles, usually $250 to $1,000. Lower deductibles mean higher premiums.
When you absolutely need full coverage
If you have a loan or lease
Lenders require full coverage to protect their collateral. If your car is wrecked before you've paid it off, the bank wants to make sure they get paid.
If your car is worth more than $5,000-7,000
The math on dropping coverage starts to flip when your car drops below this range. Above it, full coverage usually pencils out. Below, it often doesn't.
If you can't afford to replace your car out of pocket
This is the simplest test. If your car got totaled tomorrow and it would be a financial disaster, you need collision and comp.
When you can probably drop full coverage
Your car is paid off and over 8-10 years old
At that point, the car's actual cash value (what insurance would pay if totaled) is often less than two or three years of premium. You're paying more than the protection is worth.
You have savings to cover replacing your car
If you'd just go buy a similar used car if yours was destroyed, you don't need an insurance company to do it for you.
Your car is worth less than $4,000
By the time the actual cash value of your car is this low, premiums for full coverage often eat up the value of the car within 3 to 4 years.
How to do the math yourself
Two simple checks tell you whether full coverage still makes sense for any specific vehicle:
1. The 10% rule
If your annual collision plus comprehensive premium is more than 10% of your car's actual cash value, dropping it is worth considering.
Example: car is worth $4,000. Collision + comp premium is $700/year. That's 17.5% of the car's value. Many drivers in this situation drop it and self-insure.
2. The break-even check
Take your annual collision + comp premium times 5. That's roughly what you'd pay over 5 years. If your car is worth less than that number, you're trending toward losing money on the coverage.
California-specific things to know
Credit score doesn't affect your rate
Unlike most states, California prohibits insurers from using credit to set auto rates. Your driving record, mileage, vehicle, and location matter more here.
Uninsured motorist matters more
California has high rates of uninsured drivers (around 14% per state estimates). Even if you're carrying liability only, you should always carry uninsured/underinsured motorist coverage. It pays for your medical bills if an uninsured driver hits you.
Minimum limits aren't enough
If you can afford it, carry at least 100/300/100 in liability, not the state minimum 15/30/5. The cost difference is often only $10 to $30 a month, and it protects everything you own from a lawsuit.
A common middle ground
Some drivers carry liability + comprehensive (no collision). This protects against theft, weather, and other non-crash damage but skips collision.
This makes sense in a few situations:
- Older vehicles parked outdoors in higher-theft or storm-prone areas
- Drivers with strong driving records who feel comfortable absorbing collision costs
- Cars that are valuable enough to insure against theft but not against fender-benders
Bottom line
Full coverage isn't always smart, and liability-only isn't always cheap. The right answer depends on what your car is worth, what you can afford to replace yourself, and how comfortable you are taking on risk.
If you haven't reviewed which coverage you have on each vehicle in over a year, it's worth a quick review. We do it for California drivers free, and a 10-minute conversation often saves $20 to $50 a month on cars where the math has flipped.
Written by
ACIAI Team
Licensed California Insurance Agents
The ACIAI editorial team — a group of licensed California agents helping families navigate auto, home, life, and business insurance across the Central Coast.