The short version
An EV hides its expensive problems where a gas-car checklist never looks: the pins of the charge port, the rate on the charging screen, the way regen hands off to the brakes, and a date sticker on a small 12-volt. None of those needs a lift — a flashlight, a charging session, and a twenty-minute drive cover them — and the two that do, pack health and high-voltage faults, need a shop that speaks EV. Bring the general checklist for the body and the paperwork, and run this one for the rest.
The standard used car inspection was written for a car with an engine. Half of it doesn't apply to an EV — no oil to read, no cold start to listen to — and the parts that decide whether the car is a good buy aren't on the form at all: the charge port, whether it charges at the rate it should, how the regen behaves, the age of the 12-volt battery that wakes the whole car up, and what the software screen says.
This is the EV half. Keep the general checklist for bodywork, glass, suspension, and paperwork; run these on top, in the order you'll do them: the setup before you go, the port and cables, a charging test, the drive, the 12-volt and tires, then the software and the questions for a shop.
Before you go: two requests and one bag
Ask the seller for two things up front. First, charge the car to 100% the night before — that feeds the range comparison in the battery health check, and a seller who won't is telling you something. Second, have every cable and adapter laid out, plus access to wherever the car normally charges. A seller who charges at home can show you a working session in five minutes; one who "only uses public chargers" needs the fast-charger test below.
Then pack a small bag:
- A flashlight — the charge port inlet and the 12-volt battery both sit in shadow
- A tire tread depth gauge, or a quarter
- The charging network apps for your area, with payment set up, so a DC test doesn't stall at the screen
- Your own portable charging cord if you own one — it separates a bad cable from a bad car
- The onboard charger's maximum AC rate from the owner's manual, so you know what the charging screen should show
The charge port: door, pins, and the cable set
Open the port door — motorized or manual — and watch it: it should open fully, hold, and close flush without being pushed. A door that droops or sticks is a repair, and on some cars a failed door means the car won't charge at all.
Put the flashlight on the inlet. You want clean, dry, and uniform; what you don't want is scorching or browning around a pin, green or white corrosion, a pin that sits lower or leans, debris in the socket, or cracks in the housing. Heat damage usually means a loose connection has been arcing under load, and the fix is often the whole inlet assembly. Check the locking pin that holds the connector, too — if it sticks, public chargers will leave the cable stuck or refuse to start.
Cables are expensive to replace. Check what the seller has against what the car shipped with:
- The portable charging cord (Level 1 or dual-voltage mobile connector) — check the prongs and the handle for melting or discoloration
- The DC adapter if the car needs one for a given network (CCS-to-NACS or the reverse, depending on the car and the year)
- The connector's release button and latch — it should click in and release without force
- The home wall charger, if it's part of the sale — usually it isn't, and that's worth settling before money moves
Charging test: AC first, DC if you can
Never buy an EV you haven't watched charge. Plug into the seller's home unit or a nearby Level 2 station and stay a few minutes. The car should acknowledge the cable, start drawing within a minute, and settle near the onboard charger's maximum, allowing for a smaller home unit. A car that starts and stops, throws an error, or sits far below what the station can deliver has a problem in the inlet, the onboard charger, or the wiring between them.
If the seller will ride along, drive to a public DC fast charger for a short session. Watch it initiate — the handshake is where a damaged inlet or a bad communication line shows up first — and watch the rate ramp. Two honest cautions: a cold pack charges slowly on DC by design, and every car tapers as the pack fills, so a modest rate on a chilly morning with a mostly full pack is not a verdict. And one session can't catch an intermittent fault; it only rules out a car that fails every time. Note whether the port and cable were merely warm or uncomfortably hot when you unplugged.
On the drive: regen, brakes, and the sounds an EV shouldn't make
An EV drive is quiet, which makes every noise a clue. Fold these into the general test drive route and pay particular attention to how the car slows down. Lift off at speed: regenerative braking should come in smoothly and consistently, without a lurch at the start or a shudder as it fades. Try one-pedal mode if the car has it and let it bring you to a complete stop.
Weak regen has innocent causes. A pack near 100% has nowhere to put the energy, and a cold pack accepts it slowly; both are normal and both fade as you drive. What isn't normal is regen still weak after twenty minutes on a mild day, a surge as the car hands off to the friction brakes, or a pedal that feels different from one stop to the next. Then look at the friction brakes: EVs use them so little that rotors rust, and a film that wipes off on the first stop is fine, while deep pitting or a caliper dragging and heating one wheel means the car sat, and sat wet. Listen for a whine that changes with speed, a clunk from the reduction gear going from reverse to drive, and a coolant pump running loudly long after you park.
The 12-volt battery, the tires, and the weight problem
Every EV still has a small 12-volt battery, and it's the usual reason a used EV won't "turn on": it runs the computers that close the high-voltage contactors, so when it dies the car is a brick with a full pack. Find it — under the hood, the trunk floor, or a side panel — and read the date sticker or stamped code. Check the terminals, ask when it was replaced, and ask about low-voltage warnings. On some models it's an odd size or a lithium unit only the dealer stocks.
Tires are the consumable a heavy car eats. Instant torque plus the weight of the pack wears tread faster than a gas car. Measure all four at both shoulders and the center, read the date codes, and look for:
- Inner-shoulder wear on the rears — a common pattern on heavy cars, and a suspension question for the shop
- Two matching pairs or four different brands — a budget replacement says something about how the car was maintained
- Whether the replacements are the EV-rated or foam-lined tires the car came with; it drives on either, but noise and range change
- Date codes older than the mileage justifies, or brand-new rubber on a car that otherwise shows heavy use
- Bent or scuffed rims — heavy cars hit potholes harder
Software, accounts, and what a regular mechanic will miss
Open the software screen and note the version and whether an update is pending or has failed. It tells you two things: whether the car still talks to the manufacturer's servers (a car that hasn't updated in a long time may have lost connectivity or been cut off after a salvage event) and whether recall fixes delivered over the air have landed. Run the VIN through the NHTSA recall lookup and compare the open items with what the car shows. Have the seller remove the car from their account while you watch.
Then be honest about what a general mechanic can do. A regular shop catches what it catches on any car, and you should still book one alongside the general inspection checklist. What it usually cannot do is read the high-voltage system. Most shops lack the tool that reports pack state of health, cell voltage spread, isolation faults, and charging fault history. For that half, book an EV-experienced independent or the brand's dealer and hand them a list: pack health and cell balance, isolation resistance, stored high-voltage and charging fault codes, inlet condition, and the 12-volt under load.
Before you drive out, do the part that doesn't need the car in front of you: text the seller for the VIN, look up the recalls, and run the listing through a free check for the fake-ad and mismatch patterns. A seller who supplies the VIN, charges to full, and lays out the cables has already passed the first test.