Hi, I picked up my 2010 Sportback yesterday (2.0tdi 143hp multitronic), and when idling it whilst the engine is cold it seems to judder every 2 seconds, along with the rev needle dipping slightly as it judders. The car has manufacturers warranty until next friday, so I rushed around on the phone today to get it into an Audi garage before it ran out of warranty. However when I drove it this evening the juddering seems to have settled down. It also stops juddering when the engine is warm. Just wondering if this is a common problem and if its still worth taking it to Audi? Or if it just what to expect with a diesel. Any advice appreciated! Cheers, Ash.