The first-ever compact sports car released by Audi, the TT RS was in production starting in 2009. It was available in both coupé and Roadster variants and featured an all-new 2.5 litre inline 5 turbocharged petrol engine. Today, strides have been made on the components and technology included in the Audi TT RS, including the release of the TT RS plus in 2012, which can reach a top speed of 174 mph.