Less than TT, the Audi R4 Audi is based on the idea that e-Tron (pictured), premiered at the Detroit Motor Show in January. That said - it uses a combustion engine rather than electricity to defend the concept.Available in the choice of petrol or diesel, the car is available in the £ 1.4-liter TSI power is 180 horsepower, or upgrade to 170 and 2.0-liter TDI 2500.Audi A4 appears in 2013 - to put to bed rumors that Audi has had to launch a mid-engine sports car entry.
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