How California’s New Auto Dealer Law Protects Buyers Starting This Week

• California’s Combating Auto Retail Scams Act takes effect October 1, 2026, and applies to every licensed dealer in the state selling or leasing vehicles under 10,000 pounds.
• Dealers must now show a vehicle’s total price in the first ad or message that mentions it, and they can no longer charge for add-ons like oil-change plans on a car that has no engine to change oil in.
• Buyers get a new three-day right to cancel a used vehicle purchase of $50,000 or less, though mileage limits and restocking fees can apply.

A Three-Day Cooling-Off Period Just Became California Law

Anyone who buys a used car in California starting this week gets something most states still don’t offer: a legal window to walk away. Under the California Combating Auto Retail Scams Act, buyers of used vehicles priced at $50,000 or less have three days, weekends included, to cancel the deal for any reason. It’s one piece of a broader law, known as the CARS Act or Senate Bill 766, that takes effect October 1 and rewrites the rules for how California dealers can advertise, price and sell cars.

Governor Gavin Newsom signed the bill on October 6, 2025, and dealers have had almost a year to adjust their paperwork, training and advertising. For drivers, the practical effect lands now. The law targets the exact complaints that flood consumer protection agencies every year: prices that balloon once a buyer sits down at the finance desk, add-on products nobody asked for, and financing terms that shift after a handshake.

What Dealers Can No Longer Say or Hide

The law’s core requirement is a “total price” rule. Any advertisement or first written communication that references a specific vehicle or its financing terms must now display the full price clearly, including non-optional features and destination charges. Government fees like tax, title and license can still sit outside that number, but everything else has to be in view before a buyer walks in the door.

Dealers are also barred from misrepresenting a long list of deal terms: what the car actually costs to finance or lease, whether it’s really available at the advertised price, what a trade-in is worth, what happens if the advertised price isn’t honored, and what benefits an add-on product actually provides. That last point carries real teeth. The law gives two examples directly in its text: dealers can’t sell an oil-change maintenance plan on an electric vehicle, which has no combustion engine to need one, and can’t charge for catalytic converter etching on a car that doesn’t have a catalytic converter. Selling a buyer something their car cannot use is now a specific, named violation rather than a gray area.

Optional products such as extended warranties, gap insurance and paint protection still exist, but dealers must now disclose in writing, before signing, that each one is optional and that the buyer can complete the purchase without it.

How the Three-Day Right to Cancel Actually Works

The cancellation right applies to used vehicles priced at $50,000 or less and runs three calendar days from the date of purchase, including Saturdays and Sundays. It is not unlimited. Dealers can impose a mileage cap, generally around 400 miles, and can charge a restocking fee, typically in the $200 to $600 range, for exercising the right. Buyers who plan to use this window should keep mileage low and read the dealer’s specific cancellation terms before signing, as the fee schedule is set by the dealer rather than the state.

New vehicles are not covered by the three-day cancellation right, only used ones. The law also exempts wholesale transactions, fleet sales of five or more vehicles, auction sales, and commercial buyers who purchase five or more vehicles a year, so the protections are aimed squarely at ordinary retail buyers.

Why California Wrote Its Own Version of a Federal Rule

California didn’t invent this idea. The Federal Trade Commission spent a decade building a nearly identical federal rule, the CARS Rule, after more than 100,000 consumer complaints about bait-and-switch pricing and forced add-ons. The FTC finalized it in January 2024, only for the Fifth Circuit Court of Appeals to vacate it a year later, ruling in a 2-1 decision that the agency skipped a required procedural step by not issuing an advance notice of proposed rulemaking. The FTC formally withdrew the rule from the federal code in February 2026, closing the door on a federal version.

State attorneys general, including California’s, had backed the federal rule, and Senate Bill 766 was introduced less than a month after the Fifth Circuit’s ruling to preserve the same protections at the state level, where courts can’t undo them on a federal procedural technicality. Nothing stops other states from following California’s lead, and dealer compliance firms are already watching to see whether New York, Illinois or other large auto markets introduce similar bills in 2027.

California’s legislative history notes that Californians file more than 15,000 auto-related complaints a year with the FTC alone, and that car sales consistently rank among the top sources of complaints to the Better Business Bureau and state consumer protection offices. The state already had substantial consumer protection law on the books, including the Car Buyer’s Bill of Rights and the Consumers Legal Remedies Act, but lawmakers concluded that existing remedies weren’t stopping the complaints from piling up.

What to Do If a Dealer Breaks the Rules

Dealers must now keep records for two years documenting their advertisements, first communications with buyers, pricing disclosures, add-on consents and any cancellation notices. That paper trail gives buyers something concrete to point to when filing a complaint.

A buyer who believes a dealer violated the Car Buyer’s Bill of Rights can file a complaint online through the DMV or call 1-800-777-0133. Before signing anything, buyers can also verify a dealer’s license status through the DMV’s Occupational Licensing Status Information System. If a dealer won’t resolve a dispute directly, the next steps are the California Attorney General’s office, the Bureau of Automotive Repair, small claims court, or a local Better Business Bureau chapter. None of these options are new, but the CARS Act gives buyers a clearer, more specific set of violations to point to when something goes wrong at the dealership, and a hard three-day window to change their mind on a used car before the sale becomes final.

Dealers selling under $50,000 used vehicles should already be updating their cancellation paperwork this week. Buyers heading to a California lot after October 1 should ask to see the total price in writing before signing anything, and should treat a dealer’s refusal to itemize an add-on’s benefit as a warning sign rather than a formality.

What This Means for Financing and Trade-Ins

The misrepresentation ban reaches beyond sticker price into the financing conversation itself. Dealers can’t overstate what a monthly payment will be, understate the interest rate a buyer actually qualifies for, or promise a trade-in value on the lot and then quietly reduce it once the buyer has committed to the new vehicle. Written comparisons between payment options, a common tactic at the finance desk to steer buyers toward a longer loan term or a pricier add-on package, now fall under the same “clear and conspicuous” standard as the advertised price.

The law also requires translation of key disclosures when a deal is negotiated primarily in a language other than English, closing a gap that consumer advocates say let some dealers use language barriers to obscure unfavorable terms. For a state where roughly four in ten residents speak a language other than English at home, that provision alone could reshape how dealerships in immigrant communities structure their sales conversations.

None of this means every dealer interaction becomes friction-free. Legal commentators who track the auto finance industry note that California already had a dense layer of consumer protection law before this act, including the Automobile Sales Finance Act and the Vehicle Leasing Act, and the CARS Act largely restates and sharpens those existing duties rather than inventing new ones from scratch. What changes is specificity. A buyer who previously had to argue that a vague statement amounted to fraud now has a named violation, a defined disclosure standard and a mandatory paper trail to point to.

Sources:

• California DMV: California Combating Auto Retail Scams (CARS) Act
• Hudson Cook LLP: California Enacts the Combating Auto Retail Scams (CARS) Act
• Holland & Knight: Fifth Circuit Strikes Down FTC’s Auto Retail Scam Rule