Hi there I took my (hitherto good condition) car into Kwik-Fit for a major service (£160) on the 6th of May. It is an older car, 2002 Ford Focus with 100k miles, so not worth a massive amount of money. The service was carried out, and no issues were flagged up about the car's engine or performance (just some comments on the tires, a bit of rust on the exhaust, and one of the seatbelts), so I drove away quite happily. Upon picking up the car, it seemed a little juddery to drive, but I thought this would smoothen out as I thought it may be the engine getting used to the new oil or sparkplugs. Since the service record specifically states that a test drive had been carried out, I assumed this had been observed by the staff and was therefore considered normal. Over the next few days the juddering got worse and then, come Monday the 11th of May, the car would barely drive (constant stalling, very little power when accelerating, constant juddering and lurching of the entire car). First thing on Tuesday the 12th I took the car back in to the branch to be looked at and to be repaired as obviously they had caused these problems during the service. They had to call in their Master Technician to look at it as they could not pin down the issue. After a few hours I phoned to check in and I was informed that the car was basically a pile of rubbish and was throwing out error codes left, right and centre, and had potentially serious engine problems. And, lo and behold, since picking it up after work the car is performing *even* worse, still juddering constantly, but now also revving constantly between 2000 and 4000 revs even when idle. The car was driving nicely before the service, and then completely failed after Kwik Fit staff had their hands on it. The car passed its MOT just a few weeks ago and the service report given to me on the day of the service gave it mechanically a clean bill of health. The report also specifically states that no diagnostic fault codes were found. That same day the terrible engine judder began and it all went downhill from there. Clearly something has gone very wrong during the service. I sent a written complaint by both email and through the form on their website on the 12th of May and have, up to now, heard absolutely *nothing* back from Kwik Fit (not even a confirmation that it's being looked into). I find this utterly ridiculous as I am completely without a vehicle as a result of whatever they've done to the car. I really don't want to phone them as I want to keep everything, at least at the first point of contact, in writing. I think it's only right that they repair my car to an acceptable, drivable condition considering the damage they have caused. I would also expect my service fee refunded however getting the car fixed and back on the road is more important. Just don't know what to do next!