Does California's lemon law apply to used cars?

On October 31, 2024, the California Supreme Court closed the lemon law to most used cars. In Rodriguez v. FCA US, all seven justices agreed that a used car sold with only the leftover part of its original factory warranty is not a "new motor vehicle" under the Song-Beverly Consumer Warranty Act. Without that label, the refund-or-replace remedy does not reach it, however many times the car has been in the shop.

The ruling has limits. Some used cars still qualify, and others are protected by a dealer's own warranty, by the manufacturer's duty to repair under the warranty that is left, or by federal warranty law. A new 3-day cancellation right for many used car sales also took effect on October 1, 2026, and it is easy to confuse with lemon law. For how the lemon law works on new cars, see our California lemon law guide.

What Rodriguez v. FCA US decided

The case began with a truck bought in 2013 from a used car dealer in Fontana. It was about two years old with 55,444 miles. Its 3-year/36,000-mile basic warranty had run out, but the manufacturer's 5-year/100,000-mile powertrain warranty was still in effect. The owners took it in for engine repairs six times between March 2014 and May 2015, then sued for a buyback. The trial court, the Court of Appeal and the Supreme Court all ruled for the manufacturer.

The fight was over a few words in Civil Code section 1793.22(e)(2). The lemon law's definition of "new motor vehicle" includes dealer-owned vehicles, demonstrators, and any "other motor vehicle sold with a manufacturer's new car warranty." The owners argued that a car still under its original warranty fits that phrase. The Court disagreed and read it to mean a vehicle "for which a manufacturer's new car warranty is issued with the sale." Leftover coverage from an earlier sale doesn't count.

The Court added that the Legislature "remains free to amend" the definition to include used cars with warranty left. As of October 2026, it has not. The full Rodriguez opinion is on the California courts website, and our page on recent lemon law changes places it alongside the other 2024 and 2025 decisions.

The 1995 case it disapproved

The owners in Rodriguez leaned heavily on Jensen v. BMW of North America, a 1995 Court of Appeal decision. Jensen said cars "sold with a balance remaining on the manufacturer's new motor vehicle warranty" fall within the definition. Its facts were narrower than that sentence. The driver leased a car with 7,565 miles from an authorized dealer, was told it was a demonstrator, and received the manufacturer's full 36,000-mile warranty on top of the miles already on it. (The car had actually been owned by the manufacturer's leasing company.) The Supreme Court saw that as a new-car warranty issued with the lease and disapproved Jensen to the extent it reaches further. After 29 years, the broad reading of Jensen is no longer good law.

Used cars that can still qualify

Dealer-owned vehicles and demonstrators are still in the statute, and Rodriguez left them there. A demonstrator is a car a dealer assigns to show customers what the model can do. If you bought one, or a dealer-owned car, and the manufacturer's new-car warranty was issued with your sale, the car can count as a "new motor vehicle" even with a few thousand miles on it. The California Department of Consumer Affairs puts it in one line: used vehicles are covered "if the manufacturer's new car warranty is issued with the sale."

The paperwork decides this. Look at the buyer's order for words like "demo" or "demonstrator," and look at when the manufacturer's warranty started. A car whose full new-car warranty began on the day you bought it is in a very different position from one whose warranty started three years earlier with someone else. A car that qualifies gets the same remedies as any new car, including your choice of a refund or a replacement, and a leased demonstrator follows the rules for leased cars.

Certified pre-owned cars: an open question

Certified pre-owned (CPO) cars sit in the gap Rodriguez left. A CPO car is inspected and sold through a manufacturer's program, often with a warranty backed by the manufacturer. Some lawyers argue that is enough. The counterargument is that Rodriguez requires a manufacturer's new car warranty issued with the sale, and a CPO warranty is a used-car program warranty with its own terms. We are not aware of a published California appellate decision that settles the question as of October 2026. Until one does, we won't tell a CPO buyer that the car is covered, or that it isn't. The answer turns on the exact warranty you received. Even without a buyback, a CPO warranty is still a written warranty, and the repair and federal options below apply to it.

What used car buyers can still use

A dealer's own written warranty

When a dealer gives its own written warranty on a used car (a 90-day or 3,000-mile dealer warranty, for example), Civil Code section 1795.5 makes its obligations the same as a manufacturer's under the Song-Beverly Act, with a few exceptions. The sale also carries implied warranties that the car is fit for ordinary use. Those last as long as the dealer's warranty, but never less than 30 days or more than three months. If the dealer's warranty states no length, they last the full three months. Section 1795.5 puts these duties on the seller, and courts have held that the original manufacturer carries no implied warranty duties in a used sale.

A car sold "as is" with no dealer warranty falls outside section 1795.5. Federal law adds a wrinkle worth checking in your paperwork: a seller that gives a written warranty, or sells you a service contract within 90 days of the sale, cannot disclaim implied warranties under the Magnuson-Moss Warranty Act.

The manufacturer's remaining factory warranty

Rodriguez took away the buyback, not the warranty. If the original factory warranty transfers to you, the manufacturer still has to honor it for covered repairs. The Supreme Court quoted the Court of Appeal's statement that the holder of a transferable express warranty can sue the manufacturer under the California Commercial Code for breaking its promise to repair defects. Keep using authorized dealers for covered problems and keep every repair order, since those records prove a warranty claim too.

The federal Magnuson-Moss Warranty Act

This federal law lets a consumer sue a company that fails to honor a written or implied warranty, in state or federal court. It defines "consumer" to include anyone the product is transferred to while the warranty is in effect, so a second owner can use it. For used cars it has real limits:

• The federal refund-or-replace right applies only to warranties labeled "full." Many vehicle warranties are labeled "limited," so check the heading in your warranty booklet.
• Attorney's fees are up to the judge. The statute says a winning consumer "may be allowed" fees, while California's lemon law requires them when the consumer wins.
• A case in federal court needs at least $50,000 in controversy.
• If the warranty requires an informal dispute program first, you must use it before suing under this law.

A new 3-day right to cancel, which is not lemon law

Starting October 1, 2026, the California Combating Auto Retail Scams (CARS) Act, passed as SB 766 and found at Civil Code section 1784.43, gives many used car buyers a short window to back out. A dealer selling or leasing a used vehicle at retail for $50,000 or less must offer a three-day right to cancel. You don't need a reason or a defect. It is not a free return, though:

• The window. Three calendar days, starting the day after you sign. If the dealership is closed on the third day, the period runs to the next day it is open, and it ends at close of business.
• The mileage cap. The right is gone once the car has been driven more than 400 miles since signing.
• The restocking fee. The dealer may charge 1.5% of the sale price, at least $200 and no more than $600, plus $1 for each mile over 250, up to another $150.
• The return. You must personally bring the car back during business hours, free of liens other than the financing from the sale itself, and in the same condition apart from normal wear and problems you didn't cause.
• The refund. The dealer must cancel the contract and refund your money within 48 hours, minus allowed deductions, and return your trade-in or pay you for it if it has already been sold.

On an $18,450 car driven 310 miles, the restocking fee would be $276.75 plus $60, or $336.75. Dealers must hand you a separate disclosure titled "3-Day Right to Cancel Used Car Purchase or Lease." Motorcycles, fleet sales and vehicles rated at 10,000 pounds or more are excluded. None of this depends on a defect, and it offers nothing once the three days pass. The chaptered text of SB 766 has the full conditions.

What to do if your used car keeps going back to the shop

If a seller hid a known problem or lied about a car's history, fraud claims may be available, but they are outside the scope of this page.

For a warranty problem, start by sorting out which warranties you actually have. Your sales contract shows whether the dealer gave its own written warranty or sold you a service contract, and your warranty booklet shows whether the manufacturer's coverage started with your purchase, came from a CPO program, or was left over from an earlier owner. If you bought a demonstrator or a dealer-owned car, run it through the lemon checker. For anything else, a free case review with an attorney, in English or Spanish, will sort out which of these options fits.