Audi A6
Audi made a high-performance, 4.2-litre V8 engine (parts code prefix: 077, identification code: AEC) with a Bosch KE-Motronic ECU available as an option in the original European S4s, and made the decision to continue to do so with the S6, making a version of the 4.2 available as an optional upgrade over the 2.2-litre inline five-cylinder turbo. Unlike the five-cylinder turbocharged version, the V8-powered S6 was supplied with a four-speed automatic transmission as standard, but kept the quattro four wheel drive. A six-speed manual gearbox was also available as an option.
Audi 80
In 1993, the S2 received some cosmetic updates, including new AVUS style alloy wheels, ellipsoid beam (projector) headlamps and clear front indicator lenses. This coincided with the introduction of the five-door S2 Avant, along with a limited run of four-door S2 sedan models, of which 306 were produced. The S2 saloon and Avant are actually based on the next generation B4 platform, and feature a lot of similarities in the rear axle support system to the later B5 A4 quattro. The B4 platform S2 Avant was also used between 1993 and 1995 as the basis for Audi's RS2 Avant super-sports estate, which was modified for Audi with assistance from Porsche.