Audi 2.0 TDI e Concept

Prestige car maker Audi has revealed an eco-friendly version of its all-new A4 saloon, called the 2.0 TDI e Concept. It has a special aerodynamic bodykit, a hi-tech exhaust system, which removes harmful nitrous-oxide gasses, longer gear ratios, stop-start technology, regenerative braking and a heat exchanger in the air-conditioning. All this means that the A4 delivers 57.6mpg and CO2 emissions of only 129g/km.