California used-car buyers now get something the finance office can’t talk them out of: three days to give the car back. SB 766, the California Combating Auto Retail Scams (CARS) Act, was signed October 6, 2025, and took effect Thursday, October 1. Its author, Sen. Ben Allen, calls the return period a first in the nation, meant to catch problems a short test drive misses.
It comes with a fee, a mileage cap and a $50,000 ceiling. Here’s what it actually buys you.
What changed
California already had a return option, but you had to pay for it. Under the old rule, dealers had to offer a two-day contract cancellation option on used vehicles under $40,000, priced at up to $250 or 1 percent of the price depending on the car, with restocking fees of up to $500. In practice, it was mostly something buyers saw on a form and declined.
The new right is automatic. A dealer can’t sell or lease a used vehicle at retail for $50,000 or less without giving the buyer a three-day right to cancel, and any waiver of the law is void. You can’t sign it away in the finance office.
How the clock works
The window is three calendar days, starting the day after you sign. If day three falls on a day the dealership is closed, it extends to the next day it’s open, and it ends at close of business. So if you sign on a Thursday at a store that’s closed Sundays, you have until closing time Monday.
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The right ends if the car has been driven more than 400 miles since signing. That’s enough for a real road trip, not just a lap around the block.
What it costs to return a car
Returning a car isn’t free. The dealer can charge a restocking fee of 1.5 percent of the sale price, with a minimum of $200 and a maximum of $600. If you’ve driven more than 250 miles, the dealer can add $1 per extra mile, capped at $150.
Here’s what that looks like:
- A $12,000 car: 1.5 percent is $180, so the $200 minimum applies.
- A $40,000 car: you hit the $600 cap.
- Worst case on any car: $750 total.
The dealer must refund your money within 48 hours, minus allowed deductions. If you paid by check, it can wait until two business days after the payment clears.
Your trade-in
This closes the obvious dodge. If the dealer has already sold your trade-in or started transferring its title, it owes you the greatest of three numbers: the trade value in your contract, what the dealer sold it for, or fair market value. It must also give you an itemized receipt. A dealer can’t flip your trade at auction and hand you a lowball check.
The anti-runaround clause
The law anticipates the usual stalling tactics. It’s a violation for a dealer to impede a cancellation, inflate damage claims without a reasonable basis, or claim the person authorized to process your refund isn’t available. “The sales manager’s off today” no longer works as an excuse.
Who’s left out
The right doesn’t cover vehicles over $50,000, motorcycles, auction sales, lease buyouts by a lessee who already has the car, fleet and commercial sales, or vehicles with a gross vehicle weight rating of 10,000 pounds or more. Because the obligation applies to licensed dealers, private-party sales aren’t covered either.
One gray area: the statute uses “price” in one place and “purchase price” in another without spelling out whether taxes and add-ons count toward the $50,000 cap. Expect some disputes over cars listed at $49,995.
How to use the three days
Treat the window as a paid inspection period, not a chance to change your mind on a whim.
- Get an independent pre-purchase inspection on day one.
- Check the OBD-II readiness monitors. Monitors that show “not ready” often mean someone recently cleared trouble codes.
- Run the VIN through NHTSA’s recall lookup.
- Do a cold start the next morning.
- Take a long highway drive. Heat-soaked transmissions and cooling systems tend to show problems that a 15-minute test drive never reveals.
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Bring the car back in the condition you got it. You must personally deliver it during business hours, free of new liens, with only reasonable wear, though defects that appear after delivery and weren’t your fault don’t count against you. Curb-rashed wheels are another story. Insure the car from the moment you drive off, and photograph it at delivery so you have proof if the dealer claims damage later.
The rest of the act
The return right is only part of the law. SB 766 bans charging for add-ons that provide no benefit, including nitrogen tire fills below 95 percent purity, oil changes on EVs, and catalytic-converter etching on cars that don’t have one. It also writes the FTC’s CARS Rule into state law, requiring dealers to disclose the full price up front.
For dealers, every return means a car that’s no longer “fresh” and a deal that has to be unwound, so expect stricter delivery inspections and more paperwork on the lot. For buyers, the trade-off is fair: up to $750 for 72 hours to find out what you actually bought.
If this had existed for your last used-car purchase, would you have sent it back?