[gallery link="none" columns="1" size="full" ids="54169"] source: Audi AG Limited to 40 units: special edition for the German market Exclusive exterior design: Aero kit and special heritage decal Upgraded details: consistently sporty interior Audi celebrates 40 years of quattro and presents a special edition of its top-of-the-line model in the TT model line. The Audi TT RS 40 years of quattro2 is celebrating the success story of quattro drive in impressive style. “For 40 years,...