Audi A6 4.2
The tried-and-true V-8 option for the Audi A6 is a smooth (but still chic) alternative to the more aggressive S6. Audi and Lamborghini are two distinct branches of the Volkswagen family tree, but they bear some similar fruit in the form of a shared V-10 engine. The V-10 in question derives from the Lamborghini Gallardo. Although the Italian version generates 560 horsepower, it’s tuned for only 435 hp in the Audi S6, which puts the car at a disadvantage against the BMW M5’s 500-hp V-10 and the Mercedes-Benz E63 AMG’s 525-hp V-8 monster. For those looking for something nice—not naughty—should turn to their attention to the Audi A6. From the outside, revisions to the new A6 appear to be relatively minor; the refreshed grille, bumpers, air vents, fog lights, and optional LEDs round out the list of styling modifications. Press the throttle, however, and the new 3-liter supercharged V-6 engine—dubbed 3.0T by the German automaker—is almost impossible to ignore. With 300 hp and 310 foot-pounds of torque, the Audi A6 3.0T provides a smooth ride to 60 mph in less than 6 seconds and boasts the added benefit of better fuel mileage—up to 26 mpg on the highway.