What car is the Mk6 based on?
^^^ Vast quantities of parts of the MK6 chassis/suspension/brakes/etc etc were carried over from the MK5. It's not totally a 'new' car, per se. I like to refer to it as the MK5.5

And no matter what any diesel owner (esp GTD owners!) say, buying a diesel is a
compromise, intended to
save money. GTI owners do it for the love.
Trust me, I had a 175bhp Grande Punto Sporting MJET before the GTI and I constantly had to explain what it was all the time...