Hope someone can point me in the right direction here, Just recently bought an 04 A3 TDI. Didn't realise during the test drive but during idle or tick over the car has a judder and the rev counter is erratic. Also, after a day of owning it the omissions control light came on which I think is the engine management light but please correct me if I'm wrong. It went out the day after that but has come back on today as my girlfriend was doing down the motorway and as well as that the 'COOLANT' sign came up on the in car display with an audible warning and the temperature dropped down to 60. From day 1 the juddering at idle hasn't cleared as I thought it might. Being a new car I thought it may have sat for a while at the garage and it might have been a fuel problem. Luckily I know a good mechanic who will be able to look at it for me and it is still within its 3 month warranty but I was hoping someone could give me a heads up before I take it to my friend. Sorry for the essay!