California Lemon Law for Vehicles That Stall on the Highway

If your car stalls on a California freeway, it’s more than inconvenient—it’s dangerous. The California Lemon Law (the Song-Beverly Consumer Warranty Act) may protect consumers when a vehicle repeatedly shuts off while driving and the manufacturer can’t fix it within a reasonable number of tries. This article explains, in plain language, why highway stalling may qualify under California’s Lemon Law and what steps you can take to document repairs and protect your rights. This information is general and not legal advice; every situation is different.

Why Highway Stalling May Qualify Under CA Lemon Law

California’s Lemon Law generally applies to new vehicles—and many used or certified pre-owned vehicles still under the manufacturer’s warranty—when a defect covered by that warranty substantially impairs the vehicle’s use, value, or safety, and the manufacturer or its authorized dealer cannot repair it after a reasonable number of attempts. A car that stalls at highway speeds often qualifies as a “substantial” issue because it creates sudden loss of power, steering assist, or braking assist, which can lead to dangerous situations.

California also has a “Lemon Law presumption” that may help consumers within the first 18 months or 18,000 miles (whichever comes first). If, during that period, the manufacturer or its authorized dealer has made two or more attempts to repair a defect that is likely to cause death or serious bodily injury—like a highway stalling condition—or four or more attempts for any defect, or the vehicle is out of service for repair for more than 30 cumulative days, the law presumes the car is a lemon. This presumption isn’t the only path to a claim, but it can make a case easier to prove. Your exact circumstances will determine whether the presumption applies.

Even if you’re outside the 18-month/18,000-mile window, you may still have rights under the Lemon Law if the stalling keeps happening and the manufacturer has had a reasonable number of chances to fix it under warranty. “Reasonable” isn’t a fixed number—it depends on the severity and frequency of the problem, the safety risk, the number of repair attempts, and downtime. In all cases, repairs should be performed by an authorized dealership, and you should give the manufacturer a fair opportunity to diagnose and fix the issue before exploring legal options.

Steps to Document Repairs and Protect Your Rights

First, prioritize safety. If the vehicle stalls, pull over safely and consider having it towed to the dealership rather than driving it again. Avoid clearing fault codes or disconnecting the battery before the dealer can scan the car—those codes can be critical evidence. When you arrive at the service department, describe the symptoms clearly: when it stalls (speed, temperature, uphill/downhill), warning lights, recent fuel, and whether it restarts. Ask that “customer states: vehicle stalls while driving on highway” (or similar) appears on the repair order.

Keep a detailed log. Note each stalling event with date, time, mileage, speed, weather, dashboard messages, and any noises or vibrations. Save all repair orders and invoices, even if they say “no problem found.” Confirm each document lists your complaint, the technician’s diagnosis, and the repair performed, including part numbers and software versions if applicable. Track days out of service, towing receipts, rideshare or rental cars, and communications with the dealer or manufacturer.

Take additional steps that may help. Open a case with the manufacturer’s customer care line and record the case number. Check for recalls and Technical Service Bulletins (TSBs) related to your VIN, and consider filing a safety complaint with NHTSA if stalling occurs at speed. Avoid aftermarket modifications that could complicate diagnosis. If the stalling continues after multiple attempts, or your vehicle spends extended time in the shop, consider a consultation with a California lemon law attorney to understand your options. For personalized guidance, contact ZapLemon—an attorney can review your documents, timeline, and warranty terms. Note: contacting an attorney for a consultation is the best way to obtain legal advice specific to your situation.