Audi Ur-S4 / Ur-S6
The Ur-S4 was produced from 1991 to 1994, while the Ur-S6 was produced from 1995 to 1997. They both featured a 2.2 litre, 5-cylinder engine with turbocharging and an intercooler, with of torque. In Europe, V8-powered versions of both S4 and S6 were available. The S4 version sported a engine (the same "ABH" engine as in Audi V8), the S6 had an upgraded engine "AEC" with . American versions featured a 5-speed manual transmission and in Europe a 6-speed, as well as a 4-speed automatic transmission could be substituted.
Audi A1
The A1 Sportback concept is a five-door hatchback based on the Audi A1 project quattro, with longer body of , 1.4-litre TFSI engine rated at at 5500 rpm and at 1600-2400 rpm, S tronic dual-clutch transmission, electric motor rated at and driving the front wheels, ESP-controlled active front differential lock, lithium-ion batteries, a two-part spoiler with a striking centre groove integrated into the rear window, Daytona Grey body colour, aerodynamically designed single-frame grille, LED three-dimensional main headlights, turbine-look air vents and air conditioning controls, drive select with dynamic and sport modes, contrasting white and red interior colour scheme, mobile phone WLAN connection, Audi drive select with efficiency mode, MacPherson front suspension and four-link independent rear suspension, 18-inch wheels with 225/35R18 tires, diameter brake discs, electromechanical steering with speed-sensitive power assistance, magneto-rheological shock absorbers from Audi R8 and Audi TT. The vehicle's acceleration is 7.9 seconds and average CO emissions are given as 92g/km. The vehicle's electric-only range is .