California Lemon Law: Notice, Buyback, and Civil Penalty

The California lemon law, formally the Song-Beverly Consumer Warranty Act, entitles you to a replacement vehicle or a full refund when the manufacturer can’t fix a substantial defect in your car after a reasonable number of repair attempts while it’s still under the original warranty.¹ A companion statute, the Tanner Consumer Protection Act, creates a legal presumption in your favor during the first 18 months or 18,000 miles, whichever comes first.² If the manufacturer willfully refuses to comply, a court can add a civil penalty of up to twice your actual damages on top of the refund or replacement.

Does Your Vehicle Qualify

The law covers new and used vehicles that still carry the manufacturer’s original new-vehicle warranty. If you bought used and that factory warranty has already expired, the lemon law does not help you.³ The vehicle has to have been purchased or leased in California, and the defect has to first appear while the warranty is still in force.

Cars, pickup trucks, vans, and SUVs used for personal or household purposes all qualify. So do dealer-owned vehicles and demonstrators. Motorhomes are covered only for the chassis, chassis cab, and drivetrain; the living quarters sit outside the statute.³

Business vehicles qualify with two caps: the business must operate fewer than five vehicles in total, and the vehicle in question must have a gross weight under 10,000 pounds.³ That covers most independent contractors and small operators running standard cars or light trucks. Larger fleets and heavy-duty trucks fall outside the law.

What Counts as a Lemon

Not every annoyance makes a vehicle a lemon. The defect has to be a “nonconformity” that substantially impairs the vehicle’s use, value, or safety. A transmission that slips out of gear, an engine that stalls in traffic, brakes that fail intermittently — these clear the bar. A rattle in the dash or a minor paint flaw usually does not.

The Tanner Act’s presumption kicks in if any of the following happens within the first 18 months of delivery or 18,000 miles, whichever comes first:²

The same nonconformity has been brought in for repair four or more times without being fixed.
A defect likely to cause death or serious injury has been repaired at least twice and still is not resolved.
The vehicle has been out of service for warranty repairs for a combined total of more than 30 calendar days, consecutive or not.

When the presumption applies, the burden shifts to the manufacturer to prove the vehicle is not a lemon rather than the other way around. That matters enormously in arbitration or in court.

You can still bring a claim after the 18-month/18,000-mile window closes, as long as the warranty is in effect. You just lose the automatic presumption and have to prove on your own that the manufacturer had a reasonable number of chances and failed. These claims are harder, not hopeless, and strong repair records carry them.

The Notification Step People Miss

For the four-repair and two-repair presumptions, you must have directly notified the manufacturer at least once about the problem. Taking the car to the dealer, by itself, does not satisfy the statute. A separate communication has to go to the manufacturer.²

This requirement only applies if the manufacturer clearly disclosed it in the warranty booklet or owner’s manual and provided an address for sending the notice. If the manufacturer never told you, it cannot hold the missing notice against you. Pull your owner’s manual and look for a section on warranty dispute procedures or lemon law rights; if an address is listed, send your written notice there and keep a copy.

The 30-day out-of-service presumption does not require this separate notification. If the car has simply spent too long in the shop, the presumption applies on its own.

Refund or Replacement, and the Mileage Offset

Once you qualify, you pick between a replacement vehicle and a cash refund — commonly called a buyback.¹

A replacement has to be substantially identical to the vehicle you’re returning, with all standard warranties. The manufacturer also covers sales tax, registration, license fees, and other official costs of the swap, plus incidental damages like towing and rental cars you already paid for.

A refund reimburses the actual price you paid: base vehicle price, transportation charges, manufacturer-installed options, sales tax, license fees, and registration fees. Dealer-installed accessories and aftermarket add-ons are excluded. Incidentals like towing and rental cars during repair attempts are also recoverable.

How the Mileage Offset Reduces Your Refund

Under either remedy, the manufacturer gets credit for the miles you drove before the first repair attempt for the defect. The offset is the purchase price (including transportation and manufacturer options) multiplied by the odometer reading at that first visit, divided by 120,000. Pay $40,000 for a car and bring it in at 6,000 miles, and the offset is $40,000 × (6,000 ÷ 120,000), or $2,000. Your refund would be $38,000 plus taxes, fees, and incidentals.

The earlier you get to the dealer with the problem, the smaller that deduction.

The Two-Times Civil Penalty

If you can show the manufacturer’s refusal to repurchase or replace was willful rather than a good-faith disagreement, the court can add a civil penalty of up to two times your actual damages.¹ On a $40,000 vehicle, that could reach $80,000 on top of the standard recovery.

There is a procedural trap here. After the facts triggering the presumption occur, you should serve the manufacturer with a written notice requesting that it meet its buyback or replacement obligation. Skip that notice, go straight to court, and you may forfeit the civil penalty even if the refusal looks clearly willful.¹ If the manufacturer complies within 30 days of your notice, the penalty generally will not apply. If it ignores or refuses, you’ve preserved your right to pursue it.

Documentation to Start Gathering Now

The quality of your paperwork will decide the case. Start from the first repair visit, not from the moment you decide to file a claim. By the time most people realize they have a lemon, important records have already gone missing.

Your purchase or lease agreement, which establishes the price, financing terms, and delivery date.
Every repair order, showing the date in, date out, your specific complaint, and what the technician did. If an order reads “customer states vehicle runs rough — unable to duplicate,” push the advisor to document the symptom in detail before you leave.
The warranty history report. Dealerships can print your vehicle’s full internal warranty claim history on request.
A communication log covering every email, letter, and text with the dealer or manufacturer. For phone calls, note the date, the representative’s name, and what was said.

Repair orders are the central evidence. They prove how many attempts were made, how long the vehicle sat in the shop, and whether you reported the same symptom over and over. If the written order does not match what you told the service advisor, dispute it on the spot.

Arbitration Before a Lawsuit

Many consumers go through arbitration before suing. California’s Department of Consumer Affairs certifies arbitration programs that manufacturers participate in, including the California Dispute Settlement Program.⁴ If your manufacturer uses a certified program and discloses it in the warranty, you may have to try arbitration first.

After you apply, the program collects repair orders, the sales contract, and registration documents. The manufacturer may offer a settlement before the hearing; you can accept or push forward. A decision typically arrives within 40 days of the program receiving your application.⁵

If the arbitrator rules for you, the manufacturer is bound. If you lose, or the award is too low, you can reject the decision and sue. Rejecting the award does not hurt the lawsuit, and the arbitration decision is not admissible against you in court.

Filing a Lawsuit

A civil suit under the Song-Beverly Act opens up remedies arbitration cannot always deliver, including the two-times penalty. The practical reason lawsuits are viable for ordinary buyers is the fee-shifting provision: if you win, the court must award reasonable attorney fees and costs on top of your damages.¹ Because of that rule, most lemon law attorneys work on contingency. You pay nothing upfront, and the manufacturer covers the legal fees if the case succeeds.

Deadline to File

California’s AB 1755 sets specific deadlines for lemon law claims. A lawsuit has to be filed within one year after the applicable express warranty expires, and in no event more than six years after the vehicle’s original delivery date. Waiting until the warranty runs out and then sitting on the claim is one of the most common ways people lose their rights. If repair attempts aren’t working, start the claim process while the warranty is still active.

Aftermarket Parts Don’t Automatically Void Your Warranty

A common fear is that installing aftermarket parts kills the warranty outright. Federal law says otherwise. Under the Magnuson-Moss Warranty Act, a manufacturer cannot refuse warranty coverage simply because you installed a non-branded part; it has to prove the aftermarket part actually caused or contributed to the specific failure.⁶ If a dealer blames an air intake or suspension kit, ask for the denial in writing with a specific causal explanation. Many California lemon law attorneys file under both Song-Beverly and Magnuson-Moss to maximize leverage.⁷

What Happens to the Title After a Buyback

Once a manufacturer repurchases a vehicle, the title transfers into the manufacturer’s name and is branded “Lemon Law Buyback.” That brand follows the car permanently. If it is ever resold, California law requires a written disclosure signed by the new buyer that identifies the vehicle, confirms the lemon law brand, describes each original nonconformity, and lists every repair attempted.⁸ If you’re shopping used, check the title and pull a vehicle history report before you buy.

1
California Legislative Information. California Code Civil Code 1794 – Buyer Remedies
2
California Legislative Information. California Code Civil Code 1793.22 – Tanner Consumer Protection Act
3
Department of Consumer Affairs. California’s Lemon Law Q&A
4
Department of Consumer Affairs. California Dispute Settlement Program – Arbitration Certification Program
5
Department of Consumer Affairs. Arbitration Certification Program – Arbitration Process
6
Office of the Law Revision Counsel. 15 USC 2302 – Rules Governing Contents of Warranties
7
Office of the Law Revision Counsel. 15 USC 2310 – Remedies in Consumer Disputes
8
California DMV. Lemon Law Buybacks and Warranty Returns