Electric vehicles promise efficient, quiet miles—but when your battery won’t deliver the range you were sold, it can disrupt daily life and raise safety concerns. In California, range loss can fall under the state’s Lemon Law if it substantially impairs the vehicle’s use, value, or safety and the manufacturer can’t fix it within a reasonable number of attempts. Below are attorney-informed, plain‑English tips from ZapLemon on what counts as range loss and how to document it so you’re prepared to discuss your options.
What Counts as Range Loss Under CA Lemon Law
Under California’s Song-Beverly Consumer Warranty Act (the “California Lemon Law”), a problem qualifies when it substantially impairs the vehicle’s use, value, or safety and persists despite reasonable repair attempts while under warranty. For EVs, “range loss” generally means your vehicle cannot travel a reasonable distance on a full charge compared to when you bought it—or compared to the manufacturer’s representations—due to a defect in the battery, thermal management system, charging system, or related software. The law also recognizes time out of service: if your car spends significant days in the shop for the same issue, that can matter too.
Examples that may point to a qualifying defect include: a sudden, abnormal drop in range within months of purchase; the car shutting down or entering power‑limited “limp” mode well above 0% state of charge; a software or hardware fault that caps usable battery capacity; or persistent thermal management errors that reduce highway range. Charging system defects that prevent a normal 100% charge or cause excessive battery heating can also reduce usable range in real‑world conditions. Importantly, used vehicles can be covered if they are still under the manufacturer’s warranty.
Not every range complaint is a Lemon Law issue. Normal battery degradation over time, colder weather, high speeds, under‑inflated tires, added cargo or roof racks, and aggressive driving all reduce range and usually don’t indicate a legal defect. Likewise, a “guess‑o‑meter” range display that’s inaccurate by itself may not be enough unless it reflects an underlying battery or software fault. Every situation turns on facts like warranty coverage, repair history, and how severe and persistent the range loss is.
How to Document EV Range Issues for Your Claim
Start a simple range log. Note the date, odometer, outside temperature, tire pressure, speed profile (mostly city, highway, or hills), HVAC use, and how you charged (Level 1, Level 2, or DC fast). Photograph the dash at 100% state of charge to capture the projected range and state of health indicators (if available), and take “before/after” photos for trips showing miles driven, percent battery used, and mi/kWh. If your car has an app or telematics portal, save or screenshot energy and charging reports in case data is overwritten by updates.
Run a consistent “test loop” once a week if safe to do so: same route, similar speeds, and similar climate control settings. Compare miles driven to percent battery consumed and calculate efficiency (mi/kWh). Keep charging receipts or app records showing kWh delivered—sudden decreases in usable kWh at a full charge can be strong, objective evidence of capacity loss. If the car shuts down early or shows power‑limit warnings at higher state of charge, safely capture a photo or brief video to document the event.
Document every service visit with an authorized dealer. Use clear, consistent language: “Loss of driving range compared to when purchased; early shutdown/power limit at X% SOC; please test battery capacity and thermal system.” Ask for copies of all repair orders and battery health/capacity test results, including any diagnostic codes and software versions. Track dates, mileage in/out, and days out of service. Do not reset trip meters or factory settings right before service—technicians and, later, experts may need that data. Keep records of software updates, technical service bulletins, and recalls related to the battery or charging system.
Range loss can be frustrating, but careful documentation can make a real difference when you speak with a professional about your options. Maintain a clear log, gather objective data, and ensure your concerns are accurately captured on every repair order while the vehicle is under warranty. If you believe your vehicle may qualify as a lemon, contact ZapLemon at (844) 927-5366 or https://zaplemon.com to request a consultation.
Disclaimer: This post is for informational purposes only and is not legal advice. Reading it does not create an attorney‑client relationship with ZapLemon. Laws and outcomes vary based on specific facts; consult a California attorney to obtain advice about your situation.