I drove one last week but never had any chance to drive it properly(know what I mean).Build quality is typicly audi superb, They've done away with the alloy centre console brackets as on the old ones but now have a longer centre console in place allowing for more switches and a lcd screen. Not sure about the dimensions but it looks loads bigger than the old one until you get inside and it's still fairly cramped. Rear seats are the same(only good for 5 year old kids with no legs) Thats about all I noticed(and some wierd strenthening brackets under the bonnet) Hope this helps.