Look at the frame number. Generally, the frame will not be changed, but if your electric car is not a regular manufacturer's product, there may be no frame number.

Look at the certificate, generally this can not be forged, as for other accessories, the date will not be right. But to buy a used car, you still have to take apart the battery to see the production date of the battery, because there is a three-guarantee period. Now batteries are generally made by merchants, not manufacturers, so we must identify them carefully.

You can look at the date of manufacture on the motor, but it is not accurate whether the motor of the electric car has been replaced.