I've got a 2.5 TDi Quattro sport on a '03 plate, and have notice a slight problem. The other day whilst driving on the motorway, doing a fair bit of speed, 120 mph and I noticed a sudden power loss, like a strong gust of wind had hit the car and it was struggling to make head way, dropped about 10-15 mph in about 10 secs for no apparent reason and then struggled to pick it up again, it has done this on a couple of other occasions, but then I thought it might be a servicing issue, as it was due for a service around that time, but even after having had the service its got the same problem. Now it doesnt happen all of the time which is a strange thing, as I have managed to hit 150 anyone got any ideas?
