Audi S4
Acceleration from a standstill to takes 5.1 seconds for the saloon with manual gearbox, the Avant one tenth of a second slower at 5.2 seconds. The same dash to 100 km/h in the saloon with S tronic takes 5.3 seconds, and the Avant at 5.4 seconds. The top speed is electronically limited to . However, a comparison in the American automotive magazine "Road & Track" showed the sprint from 0 to 60 mph in only 4.5 seconds for the 6-speed manual transmission. With figures like these, the B8 S4 accelerates more quickly than its V8-engined predecessors. Audi of America claims that the version of the S4 achieves 28 highway miles per gallon, and a 0 to acceleration time of 4.9 seconds with the manual transmission and 5.1 seconds with the S tronic. Fuel consumption is rated at a combined . Therefore, the B8 S4, unlike the V8-powered B6/7 models, avoids the US gas guzzler tax. The B8 S4's 3.0 TFSI engine also gets only 1 m.p.g. less than the base 2.0 TFSI engine. This is one of the most important reasons for Audi to downsize their engines, while keeping the output equivalent better, by using forced-induction such as supercharging or turbocharging.
Audi Sport GmbH
quattro GmbH has historically only been able to produce one specific model at a time at its sole plant at Neckarsulm. Chronologically, the first quattro GmbH model produced was the Audi RS2 Avant, a joint venture between Porsche and quattro GmbH, from 1994-1996 (and actually built at Porsche's Zuffenhausen plant). After this initial joint venture, all subsequent cars have been solely (with the exception of the Audi TT RS) produced at Neckarsulm by quattro GmbH. The second car was the C4 S6 Plus, produced from April 1996 to July 1997. Third was the 2000-2001 B5 RS4 Avant quattro; fourth was the 2003 C5 RS6 quattro; fifth was the 2005 B7 A4 DTM Edition saloon. Sixth out of quattro GmbH was the 2006 B7 RS4 quattro, seventh out of quattro GmbH was the 2006 B7 S4 25 Quattro, the eighth was a special edition A4 S-Line with and additional options for local markets - for example the UK 'Special Edition' with black optics pack, ventilated cross-drilled front disc brakes, black exhaust pipes, two tone leather interior - and the Swedish 'TS' designation with ventilated cross-drilled front disc brakes, S4 chassis, sport seats and aluminum interior detailing, and as of 2009, the ninth and latest offering is the 2008 C6 RS6 5.0 TFSI quattro.