Actually, of course, the most sensible way - is to visit the diagnosis. If such opportunities do not pay attention to the gaps between the parts of body: they must be uniform, the shell must not be even small dents (see the body so that light falling at an angle, so more visible dents), the doors, hood, trunk - all should be properly sealed (with severely disturbed geometry of the body, it can cause problems). Check the attachment of wings and bonnet. Traces of welding - a clear sign of artisanal-restored car! Another not insignificant thing - is to check VIN numbers. The point is that not infrequently severely broken cars are collected from several in one. Any correspondence is not complete - should raise suspicion on your part!