Since October 1, 2026, under California’s new CARS Act, most used cars bought from a dealer come with three days to change your mind. Here’s who qualifies, what it costs, how to do it, and what dealers now have to tell you before you sign.
You can return the car if all of these are true:
You don’t need a reason. Changed your mind, found a better deal, the payment feels too high: all fine.
Some big sellers already go further. CarMax and Carvana, for example, have their own return policies that run longer than three days. The law is the minimum, so use whichever terms are better for you, and check the seller’s current policy before you buy.
Three calendar days, starting the day after you sign, until the dealer closes on the third day. Weekends count.
Sign on a Friday, and your days are Saturday, Sunday and Monday. The deadline is Monday at the dealer’s closing time. If the dealership is closed that Monday, you get until closing time on Tuesday.
The calculator above works out your date.
The return right does something few buyers will think of: it turns a mechanic’s inspection into real leverage, even after you’ve signed.
Before, an independent inspection only helped if you got it before buying. Now you can drive the car to your own mechanic on day one or two and still walk away if they find something you don’t like. Even certified pre-owned cars are worth a second look, since the dealer did its own inspection.
The return right itself is free, but the dealer can charge a restocking fee:
So the most anyone pays is $750, and most people pay a few hundred dollars. The fee comes out of your refund.
| Car’s price | Miles driven | Restocking fee |
|---|---|---|
| $9,000 | 80 | $200 (the minimum) |
| $24,000 | 120 | $360 |
| $24,000 | 330 | $440 ($360 + $80 for the miles) |
| $45,000 | 400 | $750 (the maximum) |
Restocking fee by price and miles driven, under California’s 3-day return rule.
If you paid the dealer to ship the car in from somewhere else, it can keep that shipping cost instead of charging a restocking fee, up to the same limit.
The dealer has to cancel the contract and refund you within 48 hours. If you paid by check, it can wait until two business days after your check clears.
You get back everything you paid, minus only the restocking fee. That includes the doc fee and any add-ons you bought with the car, like a service contract or GAP coverage. The restocking fee is the only charge the dealer can keep.
Your trade-in comes back too, with its keys. If the dealer has already sold it or started transferring the title, it owes you the most of these three: the trade-in value in your contract, what the dealer sold it for, or its fair market value. If the dealer says it sold your trade-in, it has to show you proof. Any loan you still owed on the trade-in gets subtracted.
How “fair market value” is set: the dealer can use either of two yardsticks. One is a written offer to buy your trade-in that you got elsewhere (from CarMax or Carvana, say), as long as the offer is good for at least seven days and the dealer honors it. The other is the car’s trade-in value in a major pricing guide, such as Kelley Blue Book, on the day you cancel, based on the condition it was in when you traded it. If you have a written offer that’s higher than the guide, keep it.
Once you decide to return the car, the dealer can’t:
You also can’t sign away this right. If a contract or form says you waive it, that part doesn’t count.
Before, dealers had to offer a two-day “contract cancellation option” on used cars under $40,000, and you had to pay extra for it at signing. Most buyers never bought it.
Now the return right is automatic: three days instead of two, a $50,000 limit instead of $40,000, and you pay only if you actually return the car. Purchases signed before October 1, 2026 still fall under the old rules.
No other state requires dealers to take back a used car. Many states have “cooling-off” laws for other purchases, but they generally exempt cars, so in most of the country a return happens only if the dealer writes one into the contract. California had a version before, but you had to pay for it at signing. Now it’s free and automatic, which makes California the first state to give used-car buyers a return right by default.
The law’s name has a federal backstory. In 2024 the Federal Trade Commission finalized a national rule, also called the CARS Rule, aimed at hidden fees and junk add-ons. A federal appeals court struck it down in January 2025 on procedural grounds, before it ever took effect, and the FTC formally withdrew it in February 2026. California’s law adopts much of that rule’s approach to pricing and add-ons, then goes further with the return right. For now, buyers in California get protections that buyers in other states don’t.
Start with the dealer, in writing: an email to the sales manager stating that you’re canceling under California’s 3-day used-car return law, with your deadline and the car’s VIN. Dealers now have to keep records of cancellation requests and complaints, so a written request matters.
If that doesn’t work, file a complaint with the California DMV’s Investigations Division, which licenses dealers, or with your county district attorney’s consumer protection unit. For a large amount or a trade-in dispute, a consumer attorney can tell you what else is available.
The same law also changed what dealers have to tell everyone, whether or not you ever return a car:
Some add-ons are now banned outright because they do nothing for you: oil changes on an electric car, nitrogen tire fills that aren’t really nitrogen, catalytic converter etching on a car that doesn’t have one, paint protection that voids the factory paint warranty, and service contracts that are void because of damage the car already had.
Most cars on Bestest qualify for the 3-day return: most are priced under $50,000, and every one is sold by a licensed California dealer. Each qualifying listing gets a shield under its checkmarks. Tap it to see what returning that exact car would cost, before you ever sign.
Shop the best used cars in Orange County
Yes. Since October 1, 2026, you can return a used car bought from a California dealer within three days for any reason, if it cost $50,000 or less and you've driven it 400 miles or less. The dealer can charge a restocking fee of $200 to $750.
Three calendar days, starting the day after you sign, ending at the dealer's close of business on the third day. If the dealer is closed that day, the deadline moves to the next day it's open.
1.5% of the car's price, with a minimum of $200 and a maximum of $600, plus $1 for each mile over 250, up to $150 more. The most it can be is $750.
No. California has no return period for new cars. The 3-day right applies only to used cars.
No. It applies only to cars bought from a licensed dealer.
Yes. A certified pre-owned car is a used car, so it qualifies if it cost $50,000 or less.
The limit applies to the car's price. Sales tax and DMV fees generally don't count toward it. If your car is close to $50,000, ask the dealer to confirm in writing that it qualifies.
Yes. You get back everything you paid, including the doc fee and any add-ons, minus only the restocking fee.
You can still return it. A problem you didn't cause doesn't count as a change in condition.
No. Any waiver is void.
No. Earlier purchases fall under the old rules, where the return option was something you had to buy at signing. Check your paperwork for a "contract cancellation option."
No. California is the first state to give used-car buyers a free, automatic return right. Elsewhere, you can return a car only if the dealer offers it in the contract.
Yes. Taking it to your own mechanic is a smart use of the window. Ask for a standard inspection with nothing taken apart, and remember the miles to the shop count toward the limits.
Yes. The law sets the minimum. Dealers can offer more days, more cars or lower fees.
About this guide
This guide explains California's Combating Auto Retail Scams (CARS) Act in plain English. It isn't legal advice. Sources: the law's full text (SB 766, in effect October 1, 2026) and the FTC's withdrawal of its federal CARS Rule.
Jason Allan is the founder of Bestest, a curated used-car marketplace for Orange County, and the former head of vehicle reviews and ratings at Kelley Blue Book and Autotrader. Media: jason@shopbestest.com.
