What to Know Before Filing a Lemon Law Claim

If your car spends more time at the dealership than in your driveway, you’re not alone. Many California drivers grapple with repeat vehicle defects and wonder whether they have a “lemon.” Before you file a lemon law claim, it helps to understand how the law works, what proof you’ll need, and the timelines that can affect your options. This guide from ZapLemon explains what to know before taking the next step—so you can move forward with clarity and confidence.

California Lemon Law Basics: Are You Eligible?

California’s lemon law, part of the Song-Beverly Consumer Warranty Act, generally applies when a vehicle under the manufacturer’s warranty has a defect that substantially impairs its use, value, or safety—and the manufacturer or its authorized dealers can’t fix it after a reasonable number of attempts. “Substantial” issues often include problems like engine stalling, transmission slipping, brake failures, battery drain, or repeated check-engine warnings. Minor annoyances may not qualify, but patterns of recurring problems, especially those affecting drivability or safety, can be significant.

“Reasonable number of repair attempts” doesn’t mean a specific magic number in every case, but California does provide a helpful presumption in certain situations (often referenced as 2 attempts for a serious safety defect, 4 attempts for other issues, or 30 total days out of service within the first 18 months or 18,000 miles). Even if you fall outside these guidelines, you may still have rights under the warranty and state law. Eligibility can also vary depending on whether you purchased or leased, whether the vehicle is new or used, and whether the manufacturer’s warranty was active when problems occurred.

Remedies can include a manufacturer repurchase (buyback), a replacement vehicle, or sometimes a cash-and-keep settlement, depending on the facts. The exact outcome will depend on the vehicle’s repair history, the type of defect, mileage offsets, and other circumstances. Because every situation is different, it’s wise to talk through the details of your case before you decide to file a claim.

Keep Records, Check Warranties, Mind Deadlines

Documentation can make or break a lemon law claim. Keep copies of all repair orders, service invoices, and work summaries showing the dates, mileage, and descriptions of the problems reported. If possible, write down symptoms in plain language before each visit (e.g., “vehicle shudders when accelerating from a stop; occurs daily after 10 minutes of driving”) and confirm the same issue appears on the service paperwork. Emails, texts, and call logs with the dealer or manufacturer can also help establish a clear timeline.

Review your warranty coverage carefully. Manufacturer new-vehicle warranties and certified pre-owned warranties are not the same as third-party service contracts. If your vehicle is used, check whether the manufacturer’s warranty was still in effect when the defects arose and when the repair attempts were made. Be mindful of modifications or aftermarket parts, which can complicate coverage. If you received a recall or technical service bulletin (TSB), keep that paperwork too—it may be relevant to the defect and repair history.

Timing matters. California’s lemon law includes a presumption period (commonly the first 18 months or 18,000 miles), and there are broader statutes of limitation that may apply to warranty claims. Because clock rules can be complex and fact-specific, waiting can reduce your options. If your vehicle continues to have problems after multiple repair attempts or has been out of service for an extended period, consider speaking with a professional sooner rather than later to understand your potential next steps.