Sadly the seller was driving, we went to one of the German Technical centers on the Salwa road, also on reflection after all this realized one of the brothers was already at the centre i didn't think of anything at the time.But i recognized him after all was agreed. I asked the centre multiple times is there any Major issues and they said no only minor things about QAR500 of repair. I am not going to pretend that i am a car specialist but paying for a technical centre report and expecting a well know centre like the German company to be legit cannot be asking to much. hence why i am sharing my experience. And you are right in this country they dont care and have zero wish to regulate this. I am not the only one. The best advice i have been given so far is when buying a used car only buy cars owned from western ex-pats. While this type of profiling disgusts me it seems that the majority that have been conned have been conned by Egyptians or Jordanian.