Hi Guys, New to the forum here and apologies if this has been asked a few times in the past, I just want to be prepared. I've just bought a used A3 from my local Audi Approved centre and picking it up next Friday! It's only a few months old with about 6,000 miles in the clock. I'm going from a little 1.2L Petrol Vauxhall Corsa, to a 2.0L TDI Audi A3, so a big upgrade! I'm curious as to what type of Diesel I should use? RON 95/97/99? I test drove the car on Friday and asked the dealer what he'd recommend, and he said RON 95 would be absolutely fine, but there's nothing wrong with using any of the others. So that wasn't much help I've seen from other threads on other cars, and again, it's mixed reviews. Some say that performance can be lost from 95, but there's no real talk on 97/99. I like to fill up at BP which their Ultimate fuel is 97, whereas it isn't often I use Shell which are 99. So I have a few questions; 1. Would I lose performance using RON 95? 2. Is there much of a difference between RON 97 & 99? 3. From your point of view, which would you recommend for a car of these specs?