For the C5 chassis, there was a major change in that the popular S6 sedan was discontinued in the United States. In its place, you got to choose from a few options; if you had to have a S6, Audi would oblige but only in wagon form in 2002/2003 with the S6 Avant. If you had to have a S sedan, your option was to wait until the 2003 twin turbo RS6 launched and pay a serious premium over a standard A6. But Audi had two spiritual successors to the C4 S6. First, you could get the twin turbocharged 2.7T V6 in the A6 sedan and it could be had with a 6-speed manual. A little heavier than the C4 but with a bit more power, performance was very close to the legendary turbo 5. But few remember that there was a 4.2 V8 option on the C4 S6 in Europe as well, and you could even specify your S6 with (gasp!) an automatic transmission. Audi recreated this package as well in the new C5 A6 4.2 quattro, and to make it a bit more special it was given some S6 details. The 4.2, for example, sported lighter aluminum fenders and hood, along with an aluminum front subframe to match it’s alloy V8. A full 1.4″ longer and with 3.5″ of additional track over the standard A6, the 4.2 also gained the door blades that would later be seen on the S cars. It was the defacto S6 sedan that was never offered, though the 300 horsepower V8 was down on power to the S6 motor and only 2/3s the power of the later twin-turbo RS6. Despite the special aspects the A6 4.2 doesn’t seem to enjoy as much as cult following as either the S6 Avant or the A6 2.7T 6-speed. I’ve rounded up two 4.2s to consider today; one with a manual swap and another with quite low mileage. Which is the winner?
