What Car Makers Must Do Under California Lemon Law

California’s Lemon Law exists to protect drivers who end up with vehicles that spend more time in the shop than on the road. If your car has repeat problems under warranty, you may be wondering what the manufacturer actually has to do about it. This article explains, in plain language, the core obligations automakers have under California’s lemon law framework so you can better understand your rights and next steps.

What California Lemon Law Requires of Manufacturers

California’s Lemon Law—part of the Song-Beverly Consumer Warranty Act—requires manufacturers to stand behind their warranties. If a new or certified pre-owned vehicle covered by a manufacturer warranty has a defect that substantially impairs use, value, or safety, the automaker must repair it within a reasonable number of attempts. If they can’t fix it after those reasonable attempts, the law requires the manufacturer to offer a repurchase (often called a buyback) or a replacement, at the consumer’s choice in most cases. This remedy also includes certain incidental costs, such as sales tax, registration, and reasonable towing or rental expenses related to the defect.

When a buyback is required, the manufacturer must reimburse the down payment, monthly payments, and other qualifying charges, minus a mileage-based usage deduction calculated from the miles driven before the first repair attempt for the defect. If the consumer chooses a replacement, the manufacturer must provide a substantially identical vehicle and cover related fees, again accounting for a lawful mileage offset. Importantly, when manufacturers reacquire a vehicle as a lemon, they must brand the title as a “Lemon Law Buyback,” affix the required door-frame notice, and disclose the reason for the buyback before any resale.

Manufacturers also have broader obligations beyond just fixing or repurchasing. They must maintain authorized repair facilities and provide warranty repairs at no charge for covered defects, including needed parts and labor. They’re expected to respond to warranty claims in a timely manner, provide service information to their dealers, and, when appropriate, reimburse certain out-of-pocket expenses tied to warranty repairs. In some cases, California law allows civil penalties if a manufacturer willfully fails to comply with its obligations, and prevailing consumers may be entitled to recover reasonable attorney’s fees—though outcomes depend on the facts of each case.

Reasonable Repair Attempts and Warranty Obligations

“Reasonable number of repair attempts” isn’t just a vague phrase—California provides guidance, often referred to as the Lemon Law Presumption. As a general guide, a defect may qualify if: the manufacturer or dealer made at least two attempts to repair a serious safety defect likely to cause death or serious bodily injury; four or more attempts to repair a non-safety defect; or the vehicle was out of service for warranty repairs for a total of 30 or more days. These benchmarks typically apply during the first 18 months or 18,000 miles, but the law can still protect consumers beyond that period while the warranty is in effect. Every situation is fact-specific, so documentation matters.

Warranty obligations mean more than free repairs. If your transmission slips, your steering pulls, your braking system triggers repeated warning lights, or your EV’s battery range collapses due to a covered defect, the manufacturer has to make the repair at no cost during the warranty period. If the warranty or state law requires it, manufacturers may also cover towing to the nearest authorized dealer and provide reimbursement for reasonable rental or rideshare costs while the car is being repaired for the qualifying defect. If a fix requires a manufacturer-approved software update or a service bulletin, the dealer is expected to follow the prescribed repair path.

If you’re dealing with repeat issues, consider a few practical steps: bring the vehicle to an authorized dealer for each repair; clearly describe the symptoms (e.g., engine stalls when idling, AC fails in hot weather, infotainment freezes and resets); and keep copies of all repair orders and receipts. If the problem isn’t resolved, review your warranty booklet for any notice provisions and consider sending written notice to the manufacturer to document the ongoing defect and request help. These actions do not guarantee any outcome, but they can help establish the repair history that California’s Lemon Law uses to evaluate whether a vehicle qualifies for repurchase or replacement.