This 2001 Audi S4 Avant features extensive performance modifications including a TiAl XonaRotor 770 turbocharger kit, AWE Twin2 exhaust, and KW Variant 1 coilovers. The Nogaro Blue exterior over black leather with blue Alcantara interior is complemented by a 6-speed manual transmission and Quattro all-wheel drive. Noted issues include oil consumption, a front main seal leak, and a gearbox leak, with a replacement gearbox included.