Just like BMW’s E46 ZHP package, which was effectively an M3 without the flares and M engine, Audi, too, had a “Diet S4†in the B6 generation. Dubbed the Ultrasport Package, for $3,000 it included RS-inspired “Celebration†18″ wheels with summer tires, the lowered 1BE suspension that was part of the normal Sport package, a unique quattro GmbH/Votex body kit, and a nicely wrapped leather steering wheel and shift knob. It also limited your interior option to black, and a fair chunk of them appear in Light Silver Metallic – also a popular choice on the S4. Unlike the 330i, the USP A4’s engine choices weren’t upgraded, but you did at least have two – the AWM 1.8T rated at 170 horsepower, or the AVK 3.0 30V V6 good for 220 horsepower. Both were available with choice of 6-speed manual (*5-speed for the FWD models) or automatic, and the basic 1.8T model was about $10,000 less than the 330i. While there was no convertible/coupe USP to compare to the 330i, Audi maintained its trump card on sporty wagons. Just like the ZHP, today the USP A4s command a strong premium in the used market, especially as Avants: