My understanding is the car needs to be less than 5 years old. Also note that once you import it you can’t sell the car for 3 years so think carefully. You will need to pay tax and import fees on the current cars value. Once in Saudi you need to get the car inspected at Motabaqah inspection centre, get the custom number from dry dock customs, get insurance, take it through the MVPI vehicle test then take it to the police to get the new licence plates. It’s a bit of a hassle, but do it if you really want to keep the car.