Used EVs are a category unto themselves. The wrong things will sink you, and the things you used to worry about don’t matter at all.
Most used-car wisdom assumes a gas engine: check the timing belt, look at oil leaks, listen for valve tap. None of it applies to an electric vehicle. EVs have one moving part in the drivetrain. There’s no transmission to fail, no oil to leak, no exhaust to rust through. The things that matter on a used EV are entirely different — and most dealers selling them don’t actually know what those things are.
The single most important thing to evaluate on any used EV is battery health. The battery is 30 to 50 percent of the vehicle’s value. A car with a healthy battery at 80,000 miles is worth substantially more than the same model with a degraded one at 40,000 miles. And unlike a worn engine, a worn battery is hard to fix and expensive to replace — a full replacement runs $12,000 to $20,000 and isn’t covered by most extended warranties. Get this number right and you’re 80 percent of the way to a good purchase.
How to actually check battery health
Most modern EVs report state-of-health data through their onboard diagnostics. Tesla shows estimated full-charge range in the trip computer. Most other manufacturers expose battery health to dealer-level diagnostic tools. Ask the seller for a recent battery health report — anything below 90% on a vehicle under 50,000 miles is a yellow flag, anything below 85% is a red flag. We test every vehicle in our sales lineup with manufacturer-grade tools and disclose the number on the listing. If a seller can’t produce a number, that’s your answer.
"A used EV with a verified battery health report is a different transaction from one without. Demand the report. If they can’t produce it, walk away."
What also matters — and what doesn’t
Service records and software update history are the next priorities. EVs receive over-the-air software updates that can change range, charging speed, even braking behavior. A car that’s been kept current is meaningfully different from one that hasn’t. Ask whether the seller can show update logs and any software-related service visits. The car’s history with DC fast charging matters too — vehicles that have lived primarily on Superchargers will degrade faster than ones charged primarily at home on Level 2.
Tire wear is also worth a hard look. EVs are heavy and instantly torquey, which is brutal on tires. A vehicle that’s eaten through one set of tires by 30,000 miles is probably normal — eating through two sets is a red flag for hard driving. Brakes, on the other hand, almost never wear out on EVs because of regenerative braking. Some used EVs hit 100,000 miles on their original brake pads. That’s normal, not suspicious.
What doesn’t matter much: cosmetic interior wear, the absence of an engine bay (there isn’t one in the way you’d expect), exhaust system condition (there isn’t one), or the kinds of mileage figures you’d flinch at on a gas vehicle. A 60,000-mile EV with a healthy battery and clean service history is often a better buy than a 30,000-mile EV from a careless previous owner. The math is just different. Get a proper battery report, ask for service history, and inspect the things that actually wear.
