@sheikh_meister
I know one honest and reliable mechanic and electrician at I-10/3 Islamabad named as Riyan Auto workshop Workshop. My car work is done by them from past one year. Mechanic named as Zahid Ustad, very honest person. You can leave your car at his workshop, he will never touch your single bolt. If he replace some parts, he will keep old or faulty part and give you at the end and tell the customers this is your old part or faulty parts which is replaced by me.
If he will not able to do any work, he will first tell the customers, this work is not done by me, go to company for checking the issue.
I remembered that, Toyota company sent their brand new cars to him when there is manufacturing fault came in their corollas and their mechanic were not able to solve that fault and he solved their manufacturing faults. Also custom auctions and companies sent their car for repairing their cars.
You can visit his workshop at I-10/3 Islamabad. At Sunday, workshop is closed.