All brand new and second hand vehicles must be registered after they’re bought. In order to arrange the registration they have to be tested before the registration.

First renewal test for brand new private light vehicles is after 3 years. After this time, the testing should be repeated every year.

Renewal tests for vehicles that are more than 3 years old must be performed every year.
Renewal tests for all commercial and heavy vehicles must be performed every year.
The vehicle has to be tested before the export if the customer wishes to export the car with the number plates.
If a vehicle was damaged in an accident, it has to be tested after it is repaired.
The vehicle test can be performed up to six months prior to the expiry of the vehicle registration.
If a vehicle fails the test, a re-test must be performed within 30 days of failure of any above test.

For registration renewal, the registration renewal vehicle test can be performed up to 6 months before the expiry of vehicle registration.

The test must be performed no later than 1 month after expiry of the vehicle registration in order to avoid penalties.

Previously, only vehicles registered in Dubai could be re-tested in service centres in Dubai. This has recently changed, and vehicles registered in other emirates can also be tested in any federal service center in Dubai, including Quick Registration.

it depends on what time of the day you visit testing center. It can take up to one hour depending on the time of the day and day of the week. Ous suggestion is to visit any testing center before 9am to finish it quickly. 

Ensure that your vehicle meets the following requirements before bringing it in for a vehicle test:

Clean vehicle.
Clean license plate number.
Remove underside cover, if present.
Make sure the safety triangle, spare wheel and fire extinguisher (as applicable to your vehicle category) are in a visible/accessible location.
Make sure you have prior approval from RTA for all stickers and/or advertisements.

You just need to your vehicle registration card (Mulkiya) at the time of inspection.

1. Inspection result (Passed)

2. New insurance 

3. You must have valid Emirates ID and Valid Residence visa