Now, that you have verified the vehicle, do not move ahead before verifying the documents of the vehicle. Begin with the registration certification because that is a crucial one in terms of legality and ownership. Make sure it is not a duplicate one. After that, do a VIN Search Free and Engine Number check, and make sure it is the same everywhere. Insurance is another common and important thing. Without insurance these days, it is foolish to hit the road. Other important documents that you can check are road tax certificates, pollution under control certificates, etc. Do not leave a single loophole, and for that, you can do some homework and search for them online. Try to be as attentive as possible because you do not want the vehicle to be the cause of unnecessary trouble in the future.