The Abt AS6 3.0 TDI Audi A6 has a power increase of 20% (from 233 hp to 300 hp) - that's 100 hp per liter from a diesel engine.

Munich. 30 years ago, BMW's "large class" spawned a successor that was to become a byword for luxury, elegance and innovation: the BMW 7 Series. Drawing on technology based on the large 6 Series Coupé launched in 1976 and styling that bore the signature of BMW's chief designer Paul Bracq, BMW succeeded in creating a car that was larger than its predecessor yet managed to retain the hallmark dynamics associated with the brand.