Try giving mysore garage a shot. They are on street 48

www.mysoregarageqatar.com

fully covered garage, with experienced technicians.

here's the kicker - awesome service. I don't even bother with other garages anymore. These guys even took over all my insurance issues when some bozo rear ended me. I just handed them the police report and keys and everything got done.

I've recommended all my friends to this garage and they've been having similar (great) experiences

Hope this helps.