The California lemon law process runs in a predictable order: document every repair, send the manufacturer a written demand, and if they don’t make a proper buyback or replacement offer within 30 days, pursue free state-certified arbitration or file a lawsuit. Procedural changes effective January 1, 2025 added hard deadlines that work in your favor, giving the manufacturer 30 days to make an offer and 60 days to complete the transaction once your written demand arrives.1California Department of Consumer Affairs. New Lemon Law Procedures
Confirm Your Vehicle Is Covered
The Song-Beverly Consumer Warranty Act applies to new and used vehicles still carrying the manufacturer’s original factory warranty. A used car whose original warranty has expired is not covered.2California Department of Consumer Affairs. California’s Lemon Law Q&A Cars, pickup trucks, vans, SUVs, and the chassis, cab, and drivetrain of a motorhome all qualify, as do dealer-owned vehicles and demonstrators.
Personal, family, and household vehicles are in. Business vehicles qualify only if you have fewer than five vehicles registered in your name in California and the gross weight is under 10,000 pounds.2California Department of Consumer Affairs. California’s Lemon Law Q&A
Know When You Actually Have a Case
California law creates a rebuttable presumption that your vehicle is a lemon when any one of these thresholds is met within 18 months of delivery or 18,000 miles, whichever comes first:3California Legislative Information. California Civil Code 1793.22
- Four or more warranty repair attempts for the same defect without a fix.
- Two or more attempts to repair a defect likely to cause death or serious injury.
- More than 30 cumulative calendar days out of service for warranty repairs. The days don’t need to be consecutive.
Meeting the presumption shifts the burden to the manufacturer to prove the vehicle isn’t a lemon. You can still bring a claim outside the 18-month/18,000-mile window; the presumption just makes proving it easier.
Notify the Manufacturer Directly Before Your Fourth Visit
This is where claims quietly die. For the four-repair and two-repair presumptions, the statute requires that you have directly notified the manufacturer at least once about the defect. Telling a service advisor at the dealership does not count. If the manufacturer disclosed this requirement in your warranty booklet or owner’s manual, you must send notice to the manufacturer’s own designated address.3California Legislative Information. California Civil Code 1793.22 Find that address in your manual, send a letter describing the unresolved problem before your fourth repair visit, and use certified mail with return receipt to prove it arrived.
Build the Paper Trail From Day One
Every lemon law claim lives or dies on documentation. Reconstructing a repair history months later is painful and sometimes impossible, so start collecting the moment the first problem appears. You need:
- Your purchase or lease agreement, which proves ownership, price, and warranty terms.
- Every repair order and invoice. Drop-off and pickup dates are how you prove the 30-day threshold, and the written description of what you reported is how you prove the defect is the same one each time.
- The warranty booklet or owner’s manual, which contains the manufacturer’s notification address.
- Emails, letters, and texts with the dealer or manufacturer about the defect, organized by date.
Pay attention to what the technician writes. If you reported “engine stalls at highway speed” and the invoice says “no problem found,” ask the service advisor to accurately record your reported symptoms. That mismatch can sink a claim later.
Figure Out What You’re Owed
A buyback is not just the sticker price refunded. The statute requires restitution of the full purchase price including transportation charges and manufacturer-installed options, plus collateral charges like sales tax, license, and registration fees, plus incidental damages such as towing, rental cars, and repair expenses you actually paid.4California Legislative Information. California Civil Code 1793.2 Dealer-installed accessories and aftermarket add-ons you chose are excluded.
The manufacturer gets one deduction: a mileage offset for the miles you drove before your first repair visit. Divide the odometer reading at that first visit by 120,000, then multiply by the purchase price.4California Legislative Information. California Civil Code 1793.2 On a $40,000 car with 6,000 miles at the first visit, the deduction is $2,000, leaving $38,000 before collateral charges and incidental damages are added back. Reporting problems early protects you here. Every mile before that first visit grows the deduction.
Send the Written Demand
Once your repair attempts or out-of-service days meet the threshold, send a formal written demand to the manufacturer. Include the vehicle identification number, a summary of the recurring defect, the date and outcome of each repair attempt, total days out of service, and whether you want a full refund or a replacement. Send it by certified mail with return receipt requested.
Under the rules that took effect January 1, 2025, sending this written demand at least 30 days before filing a lawsuit is now a prerequisite. The manufacturer then has 30 days to make a buyback or replacement offer and 60 days to complete the transaction.1California Department of Consumer Affairs. New Lemon Law Procedures If those deadlines pass without compliance, you can sell the vehicle and proceed to a lawsuit.
Send the demand to the manufacturer, not the dealership. They are separate legal entities, and the statute requires that the manufacturer itself receive it. The correct address is in your warranty booklet or owner’s manual.
What Happens After You Send It
The manufacturer will do one of four things: accept the claim and start processing a buyback, make a settlement offer for less than you expected, request an inspection, or deny the claim.
If an offer comes in, measure it against the formula above. Manufacturers sometimes inflate the mileage deduction or leave out collateral charges they owe. If the offer is fair, the manufacturer must complete the buyback within 60 days of receiving your demand. Miss that window and daily penalties begin accruing against them.1California Department of Consumer Affairs. New Lemon Law Procedures
If the manufacturer denies the claim or goes silent, you have two paths: state-certified arbitration or a lawsuit.
Free State-Certified Arbitration
The California Department of Consumer Affairs runs an Arbitration Certification Program that certifies and monitors warranty arbitration programs. It costs you nothing.5California Department of Consumer Affairs. Arbitration Certification Program
You submit an application describing the unresolved defect and the manufacturer’s failure to fix it. An independent arbitrator reviews the evidence and hears from both sides, in person, by phone, or in writing. Decisions are typically issued within 40 days of the program accepting your claim.1California Department of Consumer Affairs. New Lemon Law Procedures
An arbitrator’s ruling in your favor binds the manufacturer. It does not bind you. If you believe the award is inadequate, you can reject it and file a lawsuit instead.
Filing a Lawsuit
If arbitration doesn’t resolve the dispute, or you go straight to court, California’s 2025 reforms set a tight case-management schedule. Once the manufacturer files its answer, both sides must exchange initial documents within 60 days, complete initial depositions within 120 days, and attend mediation within 150 days.6California Legislative Information. California Code of Civil Procedure 871.26
These deadlines carry sanctions. A plaintiff’s attorney who fails to produce required documents faces a $1,500 sanction per violation; a defense attorney faces $2,500. Repeated noncompliance by the consumer’s side can result in dismissal, and repeated noncompliance by the manufacturer can result in the court granting the consumer’s requested relief.6California Legislative Information. California Code of Civil Procedure 871.26
Why Attorney Fees Change the Math
If you win a California lemon law case, the manufacturer pays your attorney fees. The statute entitles a prevailing buyer to recover all costs and attorney fees based on actual time expended.7California Legislative Information. California Civil Code 1794 Because of this fee-shifting rule, most lemon law attorneys work on contingency with no upfront cost. The fees come from the manufacturer, not from your refund.
If you can show the manufacturer’s failure to honor the warranty was willful, the court can award a civil penalty of up to two times your actual damages on top of the refund.7California Legislative Information. California Civil Code 1794 A manufacturer that knows about a widespread defect and stonewalls buyback requests is the scenario this penalty targets. It does not apply to class actions or to claims based solely on breach of an implied warranty.
Don’t Miss the Four-Year Window
California applies a four-year statute of limitations for breach of warranty claims, running from the date you discovered or should have discovered the defect. Filing within the 18-month/18,000-mile presumption window gives you the strongest position, but claims outside that window remain viable as long as you file within the four-year period. If your vehicle is still under warranty and still broken, start the process now rather than waiting to see if the next repair sticks.