If your car is one year old... then go straight to the Traffic Division Office in Madina Khalifa...and get your car's registration renewed. If its older than that, then you'll have to get it inspected from "Qatar Technical Inspection Company". They have their set ups in different locations. The major one in Industrial Area, but its very crowded. There is one more in the Lulu Hyper's Parking and also in Wakrah. After you get your car cleared by them...do the insurance and registratin renewed at the same place.