How to Cancel a Used Car Purchase in California

You signed on Saturday, drove it home, and by Sunday the contract reads nothing like the number in the ad. Almost every California buyer has been told there is no cooling-off period on a car, and until now that was close to true: the only exit on a used vehicle was a cancellation option the dealer sold you at the desk, and most people waved it off. The California Combating Auto Retail Scams Act, SB 766, flips the default on October 1, 2026. A used vehicle at $50,000 or less now carries a three-day right to cancel that the dealer cannot charge you for. The clock is the tightest part of it.

Confirm the sale falls inside the law

The DMV states the act covers licensed California dealers selling or leasing light-duty vehicles under 10,000 pounds. The cancellation right itself applies to used vehicles at a price of $50,000 or less. It does not reach new cars, private-party sales, auction sales, wholesale deals, fleet sales of five or more units, or commercial buyers who take five or more vehicles a year.

Pull the separate cancellation notice out of your folder

The statute makes the dealer hand you a standalone document titled "3-Day Right to Cancel Used Car Purchase or Lease" setting out the deadline, the restocking fee, the mileage limit and the return conditions. A matching notice belongs on the first page of the purchase agreement, stating that California has no cooling-off period for new vehicles but that a used vehicle at $50,000 or less carries three days. If neither is in the paperwork, note that.

Park the car and watch the odometer

Drive more than 400 miles between signing and cancelling and the right is gone. Mileage costs money well before that: the fee schedule adds $1 for every mile over 250, capped at $150.

Count three days from the day after you signed

The three days are calendar days beginning the day after the agreement is executed, so a weekend burns two of them. If the dealership is closed on the third day, the deadline moves to its next business day.

Deliver the car and the money in person during business hours

The buyer personally brings back the cancellation, the restocking fee unless it is deducted from the refund, and the vehicle itself, free of liens other than any created by the sale and in the condition it was delivered in. Reasonable wear and tear is fine, and so is a defect that surfaced on its own rather than through you. Return anything else that came with the deal. The restocking fee is 1.5 percent of the sale price, floor $200, ceiling $600.

Check the refund and the trade-in

The dealer has 48 hours from the moment you exercise the right to cancel the contract and refund you, minus the allowed deduction. On a trade-in the dealer owes the greater of the agreed value written into the agreement, what the dealer sold your old car for, or fair market value.

If the dealer says you have to buy the option. That was the outgoing rule under the Car Buyer's Bill of Rights: under $40,000, two days, priced from $75 up to one percent of the purchase price. SB 766 repeals it, and the DMV page now carries the October 1 change. The new right is not for sale.

If the dealer refuses the return. Vehicle dealers sit under the DMV Investigations Division, so file a complaint and pick the dealer complaint type. The DMV also lists the California Attorney General at 1-800-952-5225.

If you are still shopping. The same act requires a total price in ads and written agreement that any add-on is optional, which is worth reading before the desk. Run the flood damage check first, because three days is not long enough to find water damage.

Sources. SB 766 bill text, SB 766 status, Chapter 354 of 2025, California DMV, CARS Act, California DMV, Car Buyer's Bill of Rights, California DMV, report an issue or complaint.