The ultimate checklist for second-hand buyers: from battery health to cable verification.
Buying a used electric vehicle is simpler than a petrol car, but the critical inspection points are entirely different. Understanding battery health and longevity is the foundation of making a smart purchase.
Unlike an engine's mileage, a battery's condition is defined by its State of Health (SOH). This represents how much energy the battery can hold now compared to when it was new.
Charging cables are expensive to replace (often £200-£400). Ensure the seller includes the original equipment:
On older EVs (notably the Renault Zoe and some early Nissan Leafs), the battery was often leased separately from the car. This means you may be liable for a monthly battery rental fee even after buying the vehicle.
Always verify the V5C and ask the seller for proof of battery ownership ('i' models in Renault’s case usually mean battery-owned). If it is a lease, you will need to sign a transfer agreement with the finance provider.
EVs typically come with two distinct warranties. Ensure both are transferred correctly to your name:
Used EV prices can be volatile. Before committing, cross-reference the asking price with the AutoTrader EV section. This provides a reliable benchmark for current UK market values and helps you identify if a deal is suspiciously cheap (potential battery lease) or overpriced. For a complete breakdown of ownership costs, see our total cost of ownership guide.
Once you've found the right car, don't forget to use our Subscription Calculator to find the best public charging rates for your new "green" miles.
How do I check the battery health of a used electric car?
You should request a State of Health (SOH) certificate from the dealer or an EV inspection service. For private sales, you can use an OBDII dongle with apps like LeafSpy or EVNotify to read real-time cell degradation data directly from the car.
What is a good State of Health (SOH) for a used EV?
For an electric car under 5 years old, you should aim for a State of Health (SOH) of 90% or higher. This ensures the battery still retains the vast majority of its original energy capacity.
What charging cables should be included with a used EV?
A used EV should ideally come with a Type 2 to Type 2 cable for public fast charging and a 3-pin 'Granny' cable for emergency home charging. Replacing these can cost between £200 and £400 if they are missing.
What is the difference between a leased and owned battery?
On older EVs like the Renault Zoe, the battery was often leased separately. This means you may have to pay a monthly rental fee even after buying the car. Always check the V5C and ask the seller for proof of battery ownership before purchasing.
Does an electric car battery have a separate warranty?
Yes. Most manufacturers provide a separate battery and drivetrain warranty, typically lasting 8 years or 100,000 miles. This usually guarantees the battery will maintain at least 70% of its original capacity.
