hi, i've just bought a A6 tdi 130 6sp 52 plate 2003 model. same as this and it is down as a 'sport' same trim, steering wheel as yours. mine has the colour coded bottoms around the sills and bumpers. very pleased with it, did the timing belt as was not good (it was a one owner car too!).did the coolant thermostat and service on it at the same time, as having always owned VW/audis, know these and the coolant temp sensors fail. incidentally didnt do the CTS as no faul on VCDS but now i've used it for a week has decided to fail and not read temp.Can you tell me where the CTS is located on the C5 and what probable colour/type it will be? cheers,