California Lemon Law: Step-by-Step for Car Owners

California’s Lemon Law is meant to protect car owners who are stuck with a vehicle that keeps breaking down under warranty. If your car, truck, SUV, EV, or motorcycle has been in the shop repeatedly for the same issue—or out of service for long stretches—you’re likely searching for clear, plain-English answers. This guide from ZapLemon explains what the California Lemon Law generally covers and walks you through a practical, step-by-step approach you can use today. It’s educational information, not legal advice, so if you need personalized guidance, please contact us for a consultation.

What the California Lemon Law Covers and How It Works

California’s Lemon Law is part of the Song-Beverly Consumer Warranty Act. In everyday terms, it can apply when a manufacturer cannot fix a warranty-covered defect after a reasonable number of attempts, and that defect substantially impairs the vehicle’s use, value, or safety. It typically covers new and used vehicles that are still under the manufacturer’s warranty (including many Certified Pre-Owned vehicles). Personal-use vehicles are covered, and some small-business vehicles may be covered too, depending on factors like gross vehicle weight and how many vehicles the business owns.

A “lemon” doesn’t require your car to be undrivable at all times. Common real-world examples include engines that stall, transmissions that slip or shudder, charging system failures on EVs, brake or steering issues, persistent airbag lights, electrical gremlins that drain the battery, overheating, infotainment screens that repeatedly freeze, or strong fuel and coolant smells. If the problem keeps coming back while the vehicle is under the manufacturer’s warranty, the law may provide remedies even if the dealer “can’t find anything wrong” on some visits.

California also has a “presumption” that helps consumers in the first 18 months or 18,000 miles after delivery: if there are enough repair attempts for the same defect (often cited as four or more, or two or more for a defect likely to cause serious injury or death), or the vehicle is out of service for 30 or more total days, the law presumes the car is a lemon. This is not a hard limit—cases can still succeed outside those numbers and outside the presumption window. If the vehicle qualifies, remedies may include a repurchase (buyback) or a replacement vehicle, with adjustments for mileage when the problem first appeared. Other claims, fees, or penalties may be available depending on the facts, but every situation is unique.

Step-by-Step: What to Do if Your Car Is a Lemon

First, document everything. Keep copies of all repair orders and invoices, including notes that describe your complaint (“customer states”) and the dealership’s findings. Write down dates, mileage, and symptoms (e.g., “transmission shuddering when accelerating from 20–30 mph,” “EV won’t accept charge at home or DC fast charger,” “engine stalls at stoplights”). Save emails, texts, and voicemails with the dealer or manufacturer. If the defect is intermittent, note the conditions—weather, speed, warnings on the dash—so technicians can reproduce the issue.

Second, keep taking the vehicle to an authorized dealership for diagnosis and repair while the manufacturer’s warranty is active. Politely insist that the concern be recorded, even if the shop “cannot verify” it that day. Ask for the warranty status in writing, and check whether your vehicle has any open recalls or technical service bulletins (TSBs). Avoid modifications that could complicate the warranty (for instance, aftermarket tuners, lift kits, or electrical add-ons) unless you fully understand the impact.

Third, if the problem persists, open a case with the manufacturer’s customer care line and request a buyback or replacement in writing. Some brands offer arbitration programs—these can be faster, but they are not right for everyone. Before you decide, consider speaking with a lemon law attorney about your options, deadlines, and what evidence to gather. Don’t sign settlement papers or releases without understanding what you might be giving up. If you believe your vehicle may qualify, ZapLemon can evaluate your situation and explain next steps.