If you are buying a new or used vehicle through an approved dealership, the dealer will often arrange finance for you and take care of the required registration paperwork on your behalf. You will however have to show your passport, a valid residence visa issued in Dubai and proof of employment as part of the process.
If you are choosing to register a new or used car yourself, you will need to provide a copy of your passport and Emirates ID, a copy of the sales agreement, your traffic file, a valid insurance certificate, and a letter from the bank if the car is financed, among other details.
For more information, visit the Dubai RTA.