What is the process for registering and taxing a second-hand car in Thailand?

To register your second-hand car in Thailand, ensure you obtain the green book, bill of sale, and a signed copy of the seller's ID card. You will also need a certificate of residency and your passport. Take these documents to the Department of Land Transport (DLT) to transfer the green book into your name. Additionally, you’ll need to annually take the car for a check-up, as you cannot tax it without the inspection certificate. It's advisable to have the previous owner accompany you to the motor registry office during the registration process.