California Lemon Law for Vehicles That Fail Safety Tests

A failed safety test can feel alarming, especially if you’re worried about brakes, airbags, steering, or other systems that keep you and your family safe. In California, the Lemon Law may help when a vehicle’s safety-related defects persist under warranty—even if the issue shows up as a failed inspection, warning light, or repeated “not fixed” repair visit. This article explains when safety failures can trigger California Lemon Law protections and what practical steps to take next.

When Safety Test Failures Trigger California Lemon Law

California’s Lemon Law (part of the Song-Beverly Consumer Warranty Act) generally applies when a vehicle has a defect covered by the manufacturer’s warranty that substantially impairs use, value, or safety, and the manufacturer or its authorized repair facility has had a reasonable number of opportunities to fix it. While California does not require an annual statewide “safety inspection,” safety issues routinely surface through dealer multipoint inspections, manufacturer diagnostics, brake and lamp checks for salvage-title vehicles, recall repairs that won’t pass verification, or dashboard warning lights (for example, airbag, ABS, or ADAS calibration errors). If those safety-related problems persist, Lemon Law protections may come into play.

Safety matters receive special attention under California’s Lemon Law presumption (often called the Tanner presumption). If a defect is likely to cause death or serious bodily injury, the law presumes the vehicle is a lemon if, within the first 18 months or 18,000 miles (whichever comes first), the manufacturer has had at least two attempts to repair the issue and it still isn’t fixed. Examples can include brake failures, steering loss, sudden stalling at highway speeds, airbag system faults, seat belt malfunctions, or high-voltage battery fire risks. The presumption is not the only way to qualify—many vehicles meet Lemon Law standards outside the presumption window or after a different number of repair attempts—but it’s a helpful guideline.

Coverage can extend to new vehicles and certain used vehicles that are still under the manufacturer’s warranty, including Certified Pre-Owned models. In some cases, small business vehicles (under 10,000 lbs. GVWR, with the business owning or leasing five or fewer vehicles) can also be covered. Remedies under the law may include a repurchase (refund with a mileage offset) or a replacement vehicle, plus certain incidental damages, but outcomes depend on the facts of each case. Because every situation is different, it’s wise to speak with a professional about your specific repair history and warranty status.

What to Do After Failing a California Safety Inspection

First, focus on safety. If the defect affects critical systems—brakes, steering, unintended acceleration, loss of power, airbags, or anything that makes the car unsafe to drive—consider parking the vehicle until a qualified technician says it is safe. Arrange service with an authorized dealership for your brand so repairs are performed under the manufacturer’s warranty and properly documented. Avoid clearing codes or making modifications that could complicate diagnosis.

Second, build a clean paper trail. Each time you visit the dealer, describe the symptoms in plain language (for example, “vehicle pulls left under braking,” “airbag light on with passenger in seat,” “vehicle dies when turning left at low speed”), and ask that your complaint be written exactly on the repair order. Keep copies of all repair orders, invoices, diagnostic printouts, and recall notices. Take photos or videos of warning lights or malfunctioning systems when safe to do so. Note dates, mileage, and how the defect affects your ability to use the car (missed work, towing, or recurring rentals).

Third, check your warranty coverage and escalate appropriately. Confirm whether you’re still within the basic (bumper-to-bumper), powertrain, emissions, or corrosion warranties. Ask if there are open recalls or Technical Service Bulletins (TSBs) related to your symptoms. If the problem persists after multiple visits, call the manufacturer’s customer care line to open a case number and request review by a field technician if appropriate. At that point, it may be time to learn about your rights under California’s Lemon Law—including the safety-related presumption—and to discuss your options with a lemon law professional who can evaluate your repair history and timeline.

Safety-related failures can be stressful, but you don’t have to navigate them alone. The California Lemon Law may provide options when safety defects persist under warranty, especially if repeated repair attempts haven’t solved the problem. Keep records, prioritize safety, and consider a consultation to understand your rights and next steps.