Usually the buyer will see your car and let it examine by a mechanic somewhere in Salwa Road it will cost him 200-300 QAR. Then if he likes it and both of you agreed on the asking price, he will pay in cash and proceed to Trffic Police station and change the ownership.

Requirements; Original Stimara, your Qatar ID, and your insurance policy. He will be the one to pay the transfer of ownership too.

Hope this will help.