Having read some of the "fuel range" threads, I can see that most people with the 150ps 2.0 TDIs are achieving over 500miles per tank (approx) after the first few months. I like to see how the 184ps crowd are comparing against that? I currently have 5900miles on the clock, and have been getting (According to the DIS about 45/46mpg - which is approximately correct (when compared to manual calculation). I haven't yet broken the 500mile/tank mark, but have been close a couple of times.) I've generally been running the car on the supermarket diesel as its cheaper (not ASDA though!), but though this month as an experiment I'd try the premium super diesels (BP Ultimate etc) for 3 -4 tanks to see if I notice a benefit. (I know that some people say they are a con/marketing bla, bla, but my folks tried running their A3 2.0T petrol on the higher petrol and found a measurable benefit, so I figured it was worth a go. )I know it will take about a 1/4 tank to flush out the remaining old fuel from the car, but so far it does seem to start quieter than before. Time will tell if the mpg is better as well... Will keep people updated..