Check the vehicle before you buy it Carry out your own thorough vehicle history check, which will bring to light issues such as outstanding finance, mileage discrepancies, theft and insurance write-offs. Check the condition of the vehicle bodywork and look for signs of previous accident damage and repairs. Look at the engine; even if you're no mechanic, you can still check for obvious problems, such as leaks. Check the fluid levels such as oil, brake and power-steering; if they're low, it may be an indication the car hasn't been well maintained. Check the car's electrics by trying out the windows, radio, wing mirrors, parking sensors and any other electrically operated features.