Hi you guys, hope any of you can help me as I'm close to driving my A3 off a cliff! I have a 2007 2.0 TDi Sportback 140bhp BKD engine. Not too long after owning the car which was bought April 2011, the engine developed a judder & rattle on startup just before it fires up. The car incidently drives flawlessly. It was doing my head in so I took it into an Audi dealership after hearing horror stories that there were problems with certain injectors. They didn't tell me that only the 170's suffered from this oh - no!, yet they went ahead & did the diagnostic anyway costing me £107.50. Long story short, they said my EGR needed replacing. But on inspecting the printout it said no communication with EGR. I was pointed in the direction of an Ex Audi mechanic who told me that the printout is wrong & the reason for the non comms of the EGR is because it is vacuum operated & not electronic like on some other models.Your EGR is fine he said. Anyway, he turned the car over a few times & heard the rattle & felt the judder. He said it's your Dual mass flywheel, it's f**ked. So I got him to replace the flywheel & timing belt for me. After a few start ups the fault started again! not so violent as before tho! I took it back to him & iterated that it was back. He said it could be the starter motor, on the 140's the armature windings can fail & give the starter motor a stop go - stop go type of rotation causing the starter to snatch at the flywheel. So I had him replace that also! When I had the car back he tested it over & over, in front of me & no judder. Hoorah I hear you say! Sadly no! The judder is still there, but only occasionally now & even less violent than the 2nd time. It really just does your head in!!!! I'm £1070.00 to the bad & suicidal. Fair enough he came to my home with (Audi's own diagnostic laptop that he was loaned, sssh) he ran a diagnostic there and then. The only red flag was that my synphony stereo was not coded correctly, yet I've not had 1 problem with it Nothing, no faults at all! I just do not know what to do now, I'm outa cash & outa ideas. What else can it be? Please please can anybody help?