What to Look For When Buying a Used EV (Including the $15,000 Check Most Buyers Skip)
Chris Mansour
August 6, 2026
What to Look For When Buying a Used EV (Including the $15,000 Check Most Buyers Skip)
Most used car checklists were written for petrol cars, then had the word "electric" stapled on.
They tell you to check the paint, the tyres, and the service history. All fair. But a used EV hides its biggest risk somewhere no checklist item, test drive, or trained eye can reach: inside the battery pack.
A proper pre-purchase EV inspection covers eight things. Seven of them you can check yourself at the viewing. The eighth, the battery, is the one that can cost $15,000 to $25,000 to replace, and it is the only one you cannot see.
This guide covers all eight, in the order that saves you the most money, starting with the one you should sort out before you even drive to the viewing.
What to look for when buying a used EV
The complete pre-purchase EV inspection checklist:
Battery state of health, independently verified
Remaining battery warranty and whether it transfers
Charging port condition and included cables
Real-world range on the test drive
Tyres, since EV weight and torque wear them faster
Service history, coolant changes, and software updates
Vehicle history report and open recalls
Home charging compatibility for your situation
Items two through eight take an hour at the viewing. Item one deserves its own section, because it is where buyers lose the most money and where every generic checklist goes vague.
The battery is not like any other item on the list
Every other component on a used car announces its condition. Worn tyres show tread. Tired suspension rattles. A neglected interior speaks for itself.
The battery announces nothing. A pack quietly holding 78% of its original capacity drives beautifully around the block, and the dashboard range estimate, which recalibrates to recent driving, can flatter it. You find out the truth after purchase, one road trip at a time.
The stakes are unlike anything else on the checklist too. A full pack replacement runs $15,000 to $25,000 on most models, which is why battery state of health, meaning current capacity as a percentage of original, is the single number that should anchor your decision and your price.
So how do you actually get that number?
How to verify battery health before you buy
Most advice here is weak, and it is worth being honest about why.
Asking the seller gets you "the battery is fine." Every seller says that, and most genuinely believe it without evidence.
A screenshot from the seller's own app is seller-controlled and unverifiable. Charging to 100% and reading the range estimate tests the car's guess, not the pack.
An independent measurement is different. A cloud-based audit reads the car's own battery and charging data through a secure, read-only connection and measures real energy delivered across a wide charging window. The result is a number about that specific pack, not a prediction from averages. For the full breakdown of every method, see how to check an EV battery before buying.
Here is the part that changes your whole buying process. Because the audit runs remotely, it can happen before you visit. You are no longer inspecting first and wondering about the battery later. You are verifying first and only driving out to cars that have already proven their most expensive component.
How EV TrustSeal fits into your inspection
EV TrustSeal was built for exactly this moment in the buying process.
You send the seller a free check request through evtrustseal.com. The seller connects their car online in about a minute, a verified audit runs off a single charging session, and once the result is ready you pay $99 (£79 in the UK) to unlock the certificate. The seller pays nothing, which makes it an easy yes.
The certificate is VIN-locked with a QR code and graded from EXCELLENT down to REPLACE, and you can independently verify it at evtrustseal.com/verify, so there is nothing to take on trust. Accuracy is within 3 to 5%. Tesla and Polestar are covered in Australia, with 46 manufacturers supported across the US, UK, and Canada.
If the certificate comes back strong, you view the car knowing the big question is answered. If the seller declines a free, no-effort check, that tells you something too.
The message to send the seller
Copy, paste, adjust the name:
"Hi, I'm seriously interested in the car. Before I come out to view it, would you be open to running a free battery health check through EV TrustSeal? You just connect the car online, it costs you nothing, and I'll cover the certificate on my end. It would help me feel confident paying your asking price."
Notice what that message does. It signals you are a serious buyer, it costs the seller nothing but a minute, and it ties the check to their asking price rather than to your suspicion.
The rest of the pre-purchase EV inspection, quickly
Warranty. Most EV batteries carry a separate warranty of around eight years, usually guaranteeing capacity stays above roughly 70% of original. In Australia, for example, Tesla covers Model 3 and Model Y packs for eight years and 160,000km, or 192,000km on Long Range and Performance variants, while BYD matches the eight years and 160,000km at the same 70% threshold.
Terms vary by brand, by region, and even within one brand, since BYD's UK battery warranty runs to 250,000km. Confirm the remaining term, the capacity threshold, and that cover transfers to you as the second owner.
Charging port and cables. Open the port and look for damage, corrosion, or debris. Confirm which cables are included and test one if you can.
Range on the test drive. Note the state of charge and odometer at the start and end. If the percentage drops far faster than the distance covered would suggest, ask why, and remember cold weather legitimately cuts range.
Tyres. EVs are heavy and deliver instant torque, so tyres wear faster. Uneven wear can also point to alignment or suspension issues.
Service history. Look for battery coolant services and evidence of software updates. An EV has fewer moving parts, but the ones it has still need care.
History report and recalls. Run the VIN through a vehicle history service, and check the manufacturer's recall database for outstanding battery or charging recalls.
Home charging fit. Confirm the car's connector standard suits your home setup and the public networks you would rely on.
None of these will surprise a careful buyer. The battery check is the one that separates buyers who verify from buyers who hope.
Frequently Asked Questions
What should I check on a used EV before buying?
Check the battery's verified state of health first, then the remaining battery warranty, charging port and cables, real-world range on a test drive, tyre wear, service history, the vehicle history report, and home charging compatibility. The battery matters most because it is the costliest component and the only one you cannot assess visually.
How do I check battery health on a used EV?
The reliable way is an independent measurement of the pack rather than the seller's word or the dashboard estimate. A cloud-based audit reads the car's own charging data through a secure connection and returns a verified state of health figure before you visit the car.
Is it worth buying a used EV?
Often yes, because depreciation on EVs has been steep and a healthy pack can outlast the rest of the car's ownership cycle. The economics hinge almost entirely on battery condition, which is why verification before purchase matters more than any other step.
What is a good battery health percentage for a used EV?
From 95 to 100% is excellent, and 85 to 94% is strong and normal for a well-kept used EV. Below 75%, expect noticeable range loss and price accordingly.
If you are about to inspect a used EV and the battery has not been independently verified, sending a free TrustSeal check request before you arrive is the right move. Send a free check request at evtrustseal.com.