Have had a problem with my 2010 gti for a little while but have had limited time available to get it looked at.
Basically it sounds like this ->
http://www.youtube.com/watch?v=xeh_RObli-0If I rev to about 2000rpm then take my foot off, there is an audible rattle of sorts, and the sound of air escaping along with a misfire of sorts. Under load I can hear it and the car is running a little rough. Coasting down a hill will produce a similar noise. Basically something isn't right and my first guess was loose cat, or turbo, or exhaust etc as thats pretty much where the sound is coming from. Car hasnt used any water or oil, doesn't run hot, hasnt jumped in mpg and cruises nicely.
Took it to an indi today (Motor Continental in Crouch End, London) who had the car for 7 hours and didn't manage to do anything more than put it on vag-com which threw up no error codes. I did expect to pick it up today all fixed but come 6 o'clock I found myself having to literally run to the garage to go grab it before they closed and they planned on keeping it overnight and hadn't called me to come collect it. I was unimpressed, paid the £41 for whatever and got my keys.
The chap at the garage then spent some time guessing what was wrong with it (by now 630pm) deciding he thought it was the timing chain. I'd been waiting for him to drop that on me knowing full well its one of the most laborious and expensive things to do, his estimation was that would be £1100 + VAT

Car has 41k on it and hasn't been ragged. I'm going to stick to my original plan and take it miles and miles away to Russell Automotive. I should have not bothered with anyone else.
In the meantime can anyone throw their 2c into the discussion as to what they think it might be?