Car Insurance for 16-, 17- and 18-Year-Olds in California

Three well-known publishers estimate what a California teen pays at each age, and they don't agree. Here are all three side by side, and why the numbers differ.

Full coverage by age, from three sources

Each column is a different publisher's estimate of the monthly full-coverage premium for a teen driver in California. We converted annual figures to monthly and put them side by side; we didn't adjust them otherwise.

Age	Insurify	Insure.com	MoneyGeek
16	$451	$610	$323
17	$397	$554	$308
18	—	$521	$298

Put together, that gives a range rather than a single number:

Age	Full coverage, per month	Sources
16	$323–$610	3
17	$308–$554	3
18	$298–$521	2

"—" means the source doesn't publish a California figure for that age. Insurify also publishes liability-only averages: 16: $215, 17: $189 per month.

Why the three sources disagree

They aren't measuring the same thing:

• Insurify averages quotes served on its own marketplace (plus quote estimates from Quadrant Information Services). Full coverage means comprehensive and collision with $1,000 deductibles. Rates current as of August 31, 2026.
• Insure.com uses Quadrant Information Services rates for an individual driver in a Honda Accord LX with a clean record, 100/300/100 limits and $500 deductibles. Lower deductibles and an individual policy both push the price up. Updated May 28, 2026.
• MoneyGeek doesn't name its data provider on this page. It prices a teen on a family policy (MoneyGeek publishes annual figures; we divided by 12), with 100/300/100 limits and $1,000 deductibles. Updated June 3, 2026.

California removed gender from the factors insurers may use as of January 1, 2019 (10 CCR § 2632.5), so boys and girls of the same age pay essentially the same; Insure.com's figures differ by only a few dollars a year.

Family policy vs. the teen's own policy: MoneyGeek publishes both for California. On a family policy a 16-year-old costs about $323 a month; on their own policy, about $538 — roughly 40% less on the family policy. Most teens under 18 can't sign their own policy without an adult anyway.

In California, it's years licensed, not age

California is one of the few states where an insurer isn't allowed to price you by age at all. Proposition 103 (Insurance Code § 1861.02) makes three factors mandatory, in decreasing order of importance: your driving record, the miles you drive each year, and your years of driving experience. The regulation that lists what else insurers may use (10 CCR § 2632.5) includes academic standing and driver training courses, but not age and not gender.

So the price curve above is really a licensing-experience curve. A teen who gets licensed at 16 and one who waits until 18 both start at zero years of experience. The same rule explains the steepest part of the curve: the Good Driver Discount, at least 20% by law, requires three years of being licensed with no more than one point (§ 1861.025), so a teen licensed at 16 with a clean record can't get it until about 19.

What changes at each age

Stage	What California requires
Learner's permit (from 15½)	A driver education certificate and a parent's signature. Practice with a licensed driver aged 25 or older, or a parent, guardian, spouse or instructor. Hold it for at least 6 months and log 50 hours of practice, 10 of them at night.
Provisional license, first 12 months	No driving between 11 p.m. and 5 a.m., and no passengers under 20, unless a parent, guardian, a licensed driver 25 or older, or an instructor is in the car. Signed-note exceptions for medical need, school, work or family necessity.
After 12 months, or at 18	The time and passenger restrictions end. Provisional rules only apply until 18.
Under 18, any time	No phone use while driving, even hands-free, except in an emergency ($20 fine, then $50).

Vehicle Code §§ 12814.6 and 23124. Breaking the provisional restrictions costs up to $35 or community service and adds no points, but tickets do: 2 points within 12 months restricts a provisional driver for 30 days, and 3 points brings a 6-month suspension and a year of probation. Teens who wait until 17½ can get a permit without driver education but can't take the driving test until 18.

Do you have to insure a teen on a permit?

According to the California Department of Insurance, household members of driving age must be added to the parents' policy. Some insurers start charging from the day the learner's permit is issued; others wait until the teen is licensed. The only way to leave a licensed teen off is to show they have separate insurance. Ask your insurer which rule it follows before the permit test, not after.

Who is responsible for a teen's driving

Signing your child's license application isn't just a formality. Under Vehicle Code § 17707, whoever signs it is jointly liable for the minor's negligent driving, and § 17708 makes parents liable whenever the minor drives with their permission, licensed or not. That liability is capped at $15,000 per person, $30,000 per accident and $5,000 for property damage (§ 17709), which is one reason insurers expect a teen to be on the family policy. A signer who wants to end it can ask the DMV to cancel the minor's license (§ 17711).

A teen can't simply buy their own policy either: under 18 is a minor in California, and a minor's contract can be undone (Family Code §§ 6500 and 6710), so insurers generally require an adult on the policy until 18.

How the price falls from 16 to 19

Using Insure.com's figures, which cover every age from 16 to 19, and remembering that in California the driver is really moving up in years licensed, not age, the full-coverage premium falls 16 to 17: −9%; 17 to 18: −6%; 18 to 19: −25%. These are averages for a clean record; a teen with a ticket or crash won't follow the same curve.

Keeping the price down

Our California teen driver guide covers the discounts and choices that move a teen's premium most. And keep the record clean — an alcohol violation for a driver under 21 carries its own penalties, covered in DUI under 21 in California.

More California guides

• Car insurance after a DUI in California
• SR-22 requirements in California
• DUI under 21 in California
• Driving without insurance in California
• Driving with a suspended license in California
• Reckless driving penalties and insurance in California
• Car insurance for teen drivers in California
• Car insurance for senior drivers in California