Lemon Law CA and Sudden Loss of Power

Sudden loss of power on a California highway is more than a frustrating hiccup—it can be a serious safety hazard. If your vehicle repeatedly bogs down, stalls, or drops into “limp mode,” you may be wondering whether California’s Lemon Law can help. Below, ZapLemon explains how the law views power-loss defects and the practical steps you can take to protect your rights, your safety, and your documentation. This article is for general information only and is not legal advice.

What California Lemon Law Says About Power Loss

California’s Lemon Law, part of the Song-Beverly Consumer Warranty Act, generally protects consumers when a vehicle with a manufacturer’s warranty has defects that substantially impair use, value, or safety and the manufacturer can’t fix them after a reasonable number of attempts. Sudden loss of power typically implicates safety—think stalling at intersections, failing to accelerate onto freeways, or unexpected drops in speed. The law applies to many new and used vehicles purchased or leased in California that are still under the manufacturer’s warranty, including gasoline, hybrid, and electric vehicles.

What counts as a “reasonable number” of repair attempts depends on the facts. California’s Lemon Law Presumption offers one guideline during the first 18 months or 18,000 miles (whichever comes first): generally, two or more attempts for a defect that could cause death or serious injury, four or more attempts for other defects, or more than 30 total days out of service for warranty repairs. Even if you’re outside that presumption window—or don’t meet those exact numbers—you may still have a valid claim under the broader law if the problem persists under warranty and impacts use, value, or safety.

If a vehicle qualifies, potential remedies can include a repurchase (often called a “buyback”) or a replacement, along with incidental expenses such as towing or rental cars, as provided by law. In some cases involving willful violations, civil penalties may be available. Outcomes depend on the specific facts and evidence—especially the service history and communications with the dealer and manufacturer. Arbitration or other dispute processes may be options in some situations, but a consultation is the best way to understand what fits your circumstances.

Steps to Take if Your Car Suddenly Loses Power

Safety first. If your car loses power, signal, steer to a safe location, and turn on your hazard lights. Note what you experienced: Did the power drop at highway speed? Did warning lights appear (check engine, battery, hybrid system, etc.)? If it’s safe, take a quick photo or short video of the dashboard messages and the environment. Consider towing the vehicle rather than driving it further if the power loss is severe or unpredictable.

Document everything. Schedule service with an authorized dealership and clearly describe the symptom in your own words—“sudden loss of power at 55 mph,” “won’t accelerate past 20 mph,” or “vehicle stalls after warming up.” Ask the dealer to check for technical service bulletins (TSBs), software updates, and recalls related to fuel delivery, turbo/boost control, throttle body, transmission, hybrid system, traction battery, inverter, BMS (battery management system), or ECU/PCM power management. Always request and keep copies of repair orders and invoices that show dates, mileage, technician notes, and parts replaced. Keep a personal log of each incident and repair attempt, including tow and rental receipts.