If your “new” car spends more time at the dealership than in your driveway, you may be wondering how to prove it’s a lemon. California’s Lemon Law offers strong protections, but success often comes down to understanding the rules and keeping solid records. Below, ZapLemon explains the basics in plain language so you can recognize the signs and start organizing the proof you may need.
How California Lemon Law defines a ‘lemon’
Under California’s Song-Beverly Consumer Warranty Act (commonly called the California Lemon Law), a vehicle may qualify as a “lemon” when it has a defect that substantially impairs its use, value, or safety, and the manufacturer or its authorized dealer can’t repair it after a reasonable number of attempts. The issue must arise while the vehicle is under the manufacturer’s warranty (this often includes new cars, many Certified Pre-Owned vehicles, and some dealer-sold used cars that still carry factory coverage). The defect can’t be caused by abuse, neglect, or unauthorized modifications.
California also has what’s known as the Lemon Law “presumption,” sometimes called the Tanner Consumer Protection Act. The presumption can apply during the first 18 months or 18,000 miles (whichever occurs first) if certain thresholds are met—for example, two or more attempts to fix a serious safety defect that could cause death or serious injury; four or more attempts to fix a non-safety defect; or the vehicle has been out of service for repairs for a cumulative total of 30 or more days. Meeting the presumption can make it easier to prove your case, but not meeting it doesn’t automatically disqualify you—evidence outside those limits can still demonstrate a lemon in many situations.
If a vehicle is determined to be a lemon, the law generally requires the manufacturer to offer a remedy such as a replacement or a refund (often called a “buyback”), plus certain incidental costs like towing or rental expenses when allowed by law. Which remedy may be available depends on the facts, the warranty, and the law. Because every case is different, it’s wise to consult a professional to understand your options—this article is for informational purposes only and is not legal advice.
Steps to document defects and repair attempts
Start by keeping a simple timeline. Write down the date each problem appears, a plain-English description of the symptoms (for example, “stalling at freeway speeds,” “brake pedal sinks to floor,” or “infotainment screen freezes”), and the mileage. When you visit the dealership, describe the issue clearly and ask the service advisor to write your exact complaint on the repair order. When you pick up the vehicle, get a copy of the final repair invoice that shows your complaint, the technician’s findings (“cause”), and what was done (“correction”), even if they couldn’t duplicate the problem.
Track “days out of service.” Note each day your car stays at the dealership or authorized repair facility, including waiting for parts. Save receipts for towing, rideshares, rental cars, or loaners, as those may be relevant to potential reimbursement under the law. Photos, videos, and audio clips can be powerful—if a warning light comes on, a rattle occurs, or the engine hesitates, capture it safely and store the files with date and time information.
Stay within warranty channels whenever possible. Use authorized dealers, follow scheduled maintenance, and avoid modifications that could give a manufacturer an excuse to deny coverage. If the problem persists, consider notifying the manufacturer in writing (certified mail can help you keep proof of notice), and keep copies of all emails and call logs with customer care. Some vehicles may have related recalls or technical service bulletins (TSBs); ask the dealer to check and note any TSBs on your invoice. If a defect makes the vehicle unsafe to drive, arrange a tow rather than risking a drive to the dealership.
Proving a lemon is ultimately about clear documentation and understanding how California’s Lemon Law measures “reasonable” repair opportunities. While these tips can help you get organized, only a professional can evaluate your specific facts and warranty and explain your options. If you believe your vehicle may qualify as a lemon, contact ZapLemon at 888-927-5366 or visit www.zaplemon.com to request a consultation.
Disclaimer: This article is for informational purposes only and does not constitute legal advice. Reading this page does not create an attorney-client relationship with ZapLemon or any attorney. Results depend on the specific facts and law that apply to your situation. For legal advice about your matter, please contact ZapLemon directly to discuss a consultation. Attorney advertising.