Audi TT a 'show car', Audi has not ruled out the possibility of small-scale production. With its world debut at the 2009 Geneva Auto Show, and developed by Audi's high-performance subsidiary quattro GmbH at Neckarsulm, Germany, Audi released the first ever compact sports car Audi "RS" variant – the , which was available from 2009 in Coupé and Roadster variants. The TT RS featured an all-new 2.5-litre Inline-5 turbocharged petrol engine. This new engine produces a DIN-rated power output of from 5,400 to 6,700 rpm, and torque of at 1,600–5,300 rpm. Ever since the original Audi "RS" model – the Audi RS2
Audi A3 the demise of the Audi 50 in 1978. This was the first Volkswagen Group model to use the "PQ34" or "A4" platform, bearing a close resemblance to the contemporary Volkswagen Golf Mk4, which arrived a year later. Within three years, this platform was used for total of seven cars. The A3 was initially available only with a three-door hatchback body, to present a more sporty image than the Golf, in both front and four-wheel drive. The inline four-cylinder engines were transversely mounted. After the A4, the Audi A3 was the second model in the Audi lineup to use five valves