Under the California lemon law, a manufacturer that cannot repair a warranty defect substantially impairing your vehicle’s use, value, or safety after a reasonable number of attempts must either refund your money or replace the vehicle, and you get to choose which. The rule sits in the Song-Beverly Consumer Warranty Act and applies to new and used vehicles sold or leased in California with a written warranty. Prevailing buyers also recover their attorney fees, which is why most lemon law attorneys take these cases on contingency.1California Legislative Information. California Civil Code 1794
Which Vehicles and Buyers Qualify
The law covers new cars, trucks, vans, SUVs, motorcycles, and other motor vehicles sold or leased in California with a manufacturer’s express warranty. Leased vehicles get the same protections as purchased ones. Motorhomes are split: the chassis and drivetrain fall under the standard lemon law presumption, while the living-quarters portion carries its own warranty path, and a buyer stuck with an unrepairable habitation section can choose reimbursement over a replacement.2California Legislative Information. California Civil Code 1793.2
Used vehicles qualify when they come with an express written warranty from the dealer or distributor. The warranty obligation belongs to that seller rather than the original manufacturer. An implied warranty of merchantability also attaches for the same length as the express warranty, with a floor of 30 days and a ceiling of three months.3California Legislative Information. California Civil Code 1792 – 1795.8 Sale Warranties Buy-here-pay-here dealers must give a written warranty of at least 30 days or 1,000 miles, whichever comes first, and if they skip it the law treats the warranty as given anyway.
Small businesses qualify too, as long as the vehicle’s gross weight is under 10,000 pounds and no more than five vehicles are registered to the business in California.4Justia Law. California Civil Code Article 3 Sale Warranties
What Counts as a Qualifying Defect
The defect has to substantially impair the vehicle’s use, value, or safety, and it has to appear while the manufacturer’s express warranty is still in effect.5Justia. CACI No. 3204 Substantially Impaired Explained Unpredictable stalling, recurring transmission failure, or a safety-related electrical malfunction fits the standard. Minor cosmetic issues and occasional rattles usually do not, unless they meaningfully reduce resale value.
The problem must come from a flaw in design, manufacturing, or assembly. Owner neglect, missed maintenance, and unauthorized modifications are excluded. Aftermarket parts are a common friction point, and the boundary is narrower than dealers sometimes claim: under the federal Magnuson-Moss Warranty Act, a manufacturer denying a specific warranty claim tied to an aftermarket part must prove the part actually caused the failure, and a denial only reaches the system the aftermarket part directly damaged.6Office of the Law Revision Counsel. 15 USC 2310 Refusing a brake repair because you installed aftermarket wheels is overreach.
How Many Repair Attempts Trigger the Law
California Civil Code Section 1793.22 sets up a rebuttable presumption that a vehicle is a lemon once specific thresholds are met within 18 months of delivery or before 18,000 miles on the odometer, whichever comes first:7California Legislative Information. California Civil Code CIV 1793.22
- Two repair attempts for the same defect if the condition is likely to cause death or serious bodily injury.
- Four or more repair attempts for the same non-safety defect without success.
- More than 30 calendar days out of service for warranty repairs since delivery. The days do not have to be consecutive, and time waiting on backordered parts counts. The only exception is delay from conditions genuinely beyond the manufacturer’s control.
Once the presumption applies, the manufacturer has to prove the vehicle is not a lemon, which is a much harder position than the one the buyer started in.
The Direct Notification Trap
For the two-attempt and four-attempt presumptions, the buyer must have notified the manufacturer directly of the defect at least once, but only if the manufacturer clearly and conspicuously disclosed that requirement in the warranty booklet or owner’s manual and provided an address for the notice. If the requirement was buried or never disclosed, direct notice is not needed to trigger the presumption.7California Legislative Information. California Civil Code CIV 1793.22 The 30-day out-of-service presumption has no notification requirement at all.
Claims stall here more often than they should. If your warranty booklet lists a manufacturer contact address with instructions to notify directly, send a letter describing the defect early in the repair process. Certified mail with return receipt is the safest route. Many buyers only talk to the dealership and never realize the manufacturer wanted separate notice.
What You Can Recover
The buyer picks between a refund and a replacement. The manufacturer cannot force you to accept a new vehicle instead of your money.
Refund
Restitution includes the purchase price you actually paid, including transportation charges and manufacturer-installed options; collateral charges like sales tax, license fees, and registration; and incidental damages such as reasonable towing, rental car costs, and repairs you paid for because of the defect.2California Legislative Information. California Civil Code 1793.2 Dealer-installed accessories and aftermarket add-ons are excluded.
The manufacturer gets one deduction, a mileage offset for the use you got before the first repair attempt. Divide the odometer reading at the first warranty repair by 120,000, then multiply by the purchase price. On a $40,000 car with 3,000 miles at the first visit, the offset is $1,000. The sooner you report the problem, the smaller the deduction.
Replacement
If you want a replacement instead, the manufacturer must provide a new vehicle substantially identical to the one being returned, with all the standard warranties. The manufacturer covers the taxes, registration, and fees on the replacement plus any incidental damages.2California Legislative Information. California Civil Code 1793.2
Attorney Fees and Civil Penalty
A prevailing buyer recovers attorney fees and litigation costs as part of the judgment, calculated on the attorney’s actual time spent.1California Legislative Information. California Civil Code 1794 Where the manufacturer’s failure to repurchase or replace was willful, the court can add a civil penalty of up to two times the buyer’s actual damages.8Justia. CACI No. 3244 Civil Penalty Willful Violation
Documentation That Makes the Claim
A lemon law case is built on paper. Every service visit should produce a repair order and a final invoice showing the date, mileage, the complaint you reported, and the work performed. If the technician wrote “could not replicate” on three separate visits for the same shaking at highway speed, that pattern is the evidence. Read each document before you leave the dealership and ask for corrections if your complaint is not accurately described.
If records are incomplete, ask the dealership service department for a Warranty Global Claims History report, which tracks every warranty repair on your vehicle across dealers. Pair that with your original purchase or lease agreement and the warranty booklet, and you can show how many repair attempts happened and how many days the vehicle sat in the shop.
Arbitration, Lawsuits, and the Deadline
The California Department of Consumer Affairs certifies arbitration programs that resolve lemon law disputes faster than court, and they are free to consumers.9Department of Consumer Affairs. Arbitration Certification Program If the manufacturer has a qualified third-party dispute resolution process and properly told you about it, you have to use that process before invoking the lemon law presumption in court. If no such program exists, if the manufacturer failed to tell you about it, or if you are unhappy with the outcome, you can go straight to a lawsuit.4Justia Law. California Civil Code Article 3 Sale Warranties
You can file in regular civil court or small claims court. The presumption, your repair records, and the manufacturer’s failure to resolve the defect form the core of the case. Federal law adds a second path through the Magnuson-Moss Warranty Act, which gives consumers a private right of action for breach of written or implied warranties and also shifts attorney fees to a prevailing consumer. Federal court requires at least $50,000 in controversy, but state courts have no such minimum for Magnuson-Moss claims.6Office of the Law Revision Counsel. 15 USC 2310
The deadline recently got shorter. Under AB 1755, you must file within one year after the vehicle’s express warranty expires, and no lawsuit can begin more than six years after the vehicle’s original delivery date. The old rule allowed four years from the date the defect was discovered, so anyone sitting on a claim under the old assumption should check whether the new deadline has already run.