How to File Your First Lemon Law Claim in California

If your “new-to-you” car keeps going back to the shop for the same problem, you’re not alone—and you may have rights under California’s lemon law. This guide explains, in plain English, what qualifies as a lemon in California and the basic steps to start your first claim. It’s designed for information only, not legal advice. Every situation is different, so consider contacting ZapLemon to review your specific facts before making decisions.

What Qualifies as a Lemon in California Today

In California, a vehicle may be a “lemon” when it has a defect covered by the manufacturer’s warranty that substantially impairs the car’s use, value, or safety—and the manufacturer (through its dealers) can’t fix it after a reasonable number of repair attempts. Think of issues like brakes that squeal and lose pressure, engines that stall, transmissions that slip, steering that pulls, repeated check-engine lights, or electrical systems that short out. The problem must not be caused by misuse, neglect, or unauthorized modifications.

California also has a “lemon law presumption” that helps consumers during the first 18 months or 18,000 miles after delivery (whichever comes first). Under this presumption, the law may assume the vehicle is a lemon if: (1) the dealer tried to repair the same issue 2 or more times for a defect that could cause serious injury or death, (2) 4 or more times for any substantial defect, or (3) the car was out of service for repairs for a total of 30 or more days. Importantly, vehicles can still qualify outside this window—the presumption just makes proof easier early on.

Coverage is broader than many people realize. New and used vehicles can qualify if the problems occur while the car is under the manufacturer’s new-vehicle warranty or a certified pre-owned (CPO) warranty. Some business-use vehicles are covered if they’re under 10,000 lbs. GVWR and the business owns five or fewer vehicles. Motorcycles and many motorhomes can qualify (though certain “living area” components in RVs may be excluded). Aftermarket service contracts usually don’t count as a manufacturer warranty, so check your paperwork carefully.

Steps, Records, and Timelines to Start Your Claim

Start with the basics: confirm you’re within a manufacturer warranty and schedule repairs promptly. When you visit the dealer, clearly describe symptoms (when it happens, sounds, smells, dashboard lights) and ask the service advisor to write those details on the repair order. Always keep copies of repair orders and invoices, even if the repair was “no problem found” or “software update only.” Maintain routine maintenance and avoid modifications that could give the manufacturer reason to deny coverage.

If the issue returns, continue taking the car back for repairs and document each attempt. Once you’ve reached what seems like a “reasonable number” of tries or many days out of service, consider formally notifying the manufacturer in writing (certified mail is helpful) and request a final repair attempt or relief under the lemon law. Some brands offer free, manufacturer-sponsored arbitration—this can be faster, but it’s not always the best fit. Timelines matter: many lemon law claims must be filed within four years of when you knew or should have known the vehicle might be a lemon. Because deadlines and strategies vary, a consultation with a California lemon law attorney can help you assess next steps.

Build a complete file to support your claim. This includes: all repair orders (with dates, mileage in/out, technician notes), tow/loaner/rental records, photos or videos of the defect, warranty booklets and purchase/lease contract, and any emails, texts, or call logs with the dealer or manufacturer. Track how the defect affects you—missed work, safety concerns, repeated trips to the dealer. Possible outcomes may include a repurchase (buyback), a replacement vehicle, or a cash-and-keep settlement, often subject to a “mileage offset” for use before the first repair attempt. Which path makes sense depends on your facts, so getting tailored advice is important.