Hi, I took my car in for an MOT last week and when it came back the engine sounded completely different. My car went from having a good and responsive engine to sounding like an old taxi. I spoke to the mechanics directly after picking the car up on Thursday, and we decided that I would drive it for a few days to see if it will settle down. They said they'll look at it if there's still a problem. Subsequently, I've heard that for the emissions test one of the parts means you have to really rev up the engine, and I was told that some garages go to far on that. I think that's what's happened.
I'm fond of my car, and I just spent =A3520 to get it through its mot. I am really annoyed that the mot test may have caused damage to my car. If anyone has any advice on what to do about this, I would be very grateful.