Questions to Ask Before Buying a Used Electric Car

Used electric cars can be excellent value. Depreciation hits EVs hard in their first few years, which means a three or four year old model can cost far less than new while still having most of its battery life ahead of it. But buying a used EV is not quite like buying a used petrol car. The questions that matter are different, and a few of them can save you from a costly mistake.

I have owned several EVs since 2016 and helped friends buy theirs. These are the questions I would ask before handing over money.

What is the battery's state of health?

The battery is the most valuable component, so start there. Ask for the state of health (SoH), the current usable capacity compared with new. Some cars display it in their menus. Others need a dealer diagnostic or an OBD-II reader and app. Independent battery health reports are increasingly offered by dealers and specialist services.

A healthy three to five year old EV typically shows 85 to 95 percent. Lower figures are not automatically a problem, but they should be reflected in the price, and you should check that the remaining range suits your driving. Our article on what happens to an EV battery after eight years explains what normal ageing looks like.

How much battery warranty is left?

Many EV batteries carry a warranty of around eight years or a set mileage. Find out exactly when the car was first registered, what the mileage limit is and whether the warranty transfers to a new owner. Some warranties require servicing at authorised dealers to remain valid, so ask for service records.

Where will you charge it?

This question matters more than any feature on the car. If you can charge at home overnight, almost any used EV with enough range will work. If you rely on public chargers, check what is near your home and work, and what connector the car uses. Some older models use connectors that are being phased out in certain regions, which can make public charging harder.

Also check the car's maximum charging speeds. Some older or budget EVs charge slowly on DC fast chargers, which makes long trips tedious. If you do many long journeys, this matters more than top-line range. Home charging costs are covered in how much it really costs to charge an electric car at home.

Does the real range suit your driving?

Official range figures are optimistic, especially in cold weather and at motorway speeds. Look up real-world range tests for the model and year, then reduce them for battery health and winter. If your longest regular trip fits comfortably within about 70 percent of that adjusted figure, you will rarely feel stressed.

Is the battery cooling system active?

Some early EVs used passive air cooling for their batteries, which can lead to faster degradation in hot climates and slower fast charging after repeated use. Most newer models use active liquid cooling. If you live somewhere hot or plan regular long trips, this is worth checking.

What software and features are included?

Many EVs receive software updates over the air, which can add features or improve efficiency. Some features, such as driver assistance packages or heated seats, may be tied to a subscription or to the original owner's account. Ask whether all features will transfer, and check that apps and connected services can be moved to your account.

Test the infotainment system, CarPlay or Android Auto and any driver assistance features during the test drive. Our guide to CarPlay and Android Auto features most drivers never use is a handy checklist.

Is "high mileage EVs are a bad buy" true?

Many buyers avoid high-mileage used EVs, applying the same logic as with petrol cars. I think that is often a mistake.

EVs have far fewer moving parts. There is no engine, no gearbox in the traditional sense, no clutch, no timing belt and much less brake wear because of regenerative braking. A high-mileage EV that was mostly charged slowly and driven on motorways may have a healthier battery than a low-mileage car that sat at full charge in the heat for years. Look at battery health and service history first, and mileage second.

What should you check on the test drive?

• Charge the car on a public fast charger if possible, and watch the charging speed.
• Check for warning lights and any messages about the battery or charging system.
• Listen for unusual noises from the suspension, since EVs are heavy.
• Check tyre wear, which can be faster on EVs because of weight and torque.
• Test the heating, ideally the heat pump if fitted.
• Make sure the charging cable included matches what you need.

Buy with your eyes open

A used EV can be a great buy if the battery is healthy, the range suits your driving and you have a reliable place to charge. Ask these questions, get the battery report in writing and take a proper test drive. More in our EV Ownership section.