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Audi brought the S4 Avant to the United States for the first time in 2001. It joined the sedan lineup and offered a follow-up to the large chassis S6 Avant from 1995. This was actually the second S4 Avant, as Europeans had enjoyed the C4-based creation in the early 90s. Audi’s renaming convention therefore created a successor to the B4-based S2 Avant. Instead of the traditional inline-5 motivation, though, Audi had developed a new 2.7 liter version of its V6. With a K03 turbocharger strapped to each side, the APB produced 250 horsepower at 5800 rpms and 258 lb.ft of torque at only 1850 revs. Like all the B5s, Audi’s new generation of quattro used a T2 Torsen center differential and relied upon an electronic rear differential utilizing the ABS sensors. The B5 chassis used the same technology on the front differential as well and was capable of independently braking each front wheel to try to sort the car out through its dynamic stability program.
But the real fun was that it was available as an Avant and with a 6-speed manual. Just over 1,500 were claimed imported between 2001 and 2002 model years, with about 600 of those being Tiptronic equipped. This is one of a claimed 80 Imola Yellow 6-speed manual Avants imported for the model year, and for good measure it’s got quite a few upgrades:
In just a few years, Audi went from only one S model with very limited production imported in the C4 S6 to three models. Top of the range was the S8, but it shared its running gear and sonorous V8 in a slightly detuned state with the new C5 S6. For Audi enthusiasts, though, big news came with the launch of the new S4.
It was unrelated to the first S4 because of Audi’s renaming strategy in 1995. That meant that the new S4 was based on the small chassis B5, and U.S. enthusiasts finally got a taste of Audi’s M3 competitor. Performance came in the form of a new 2.7 twin-turbocharged V6 30V and was mated to either a 5-speed Tiptronic transmission like its bigger siblings or a 6-speed manual. Like other B5s, the S4 made use of the 4th generation of quattro technology driving all four wheels. This utilized a Torsen center differential with open front and rear differentials, both of which employed the ABS sensors to electronically ‘lock up’ the slipping wheels when a speed differentiation was detected. Like other S models, some light revisions to the bodywork and more pronounced exhaust were present, along with polished mirrors and 17″ Avus-design wheels. Most notable was the large front bumper cover with 6 gaping grill covers which hid the twin intercoolers for the motor. With 250 horsepower and 295 lb.ft of torque, you had an all-weather 155 mph warrior. And, it was available as an Avant: