I have a 2004 2.0Tdi Sport 140. Its was at audi today getting a suspension problem sorted and i was given a 2008 2.0tdi sportback as a courtesy car. The courtesy car was super smooth and a lot quieter than mine, and seemed to rev a little better. Is this just due to it being new or are the engines different? I am guessing the 2008 2.0tdi is common rail? and mine is a Pd?