Audi has unveiled the Audi Sportback concept show car at the 2009 North American International Automobile Show. With systematic refinements to the brand's characteristic design elements, the five-door model offers a glimpse at the Audi's future design vocabulary. With its pronounced coupé-like silhouette and large rear hatch, the 4.95 m long (16.24 ft), 1.93 m wide (6.33 ft) and only 1.40 m high (4.59 ft) vehicle is boldly progressive for the luxury class.

The technology of the Audi Sportback concept is markedly futuristic. Power is provided by the world's cleanest diesel technology: the 3.0-liter V6 TDI clean diesel almost completely eliminates nitrogen oxides. This engine already meets the emissions limits of all 50 U.S. states and the EU6 standard scheduled to take effect in 2014. And numerous measures to ensure top efficiency mean that the Audi Sportback concept is expected to achieve impressive fuel consumption figures of 5.9 liters of diesel per 100 kilometers (39.87 US mpg).

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Check out the Audi Sportback wallpapers and Audi Sportback Pictures (pics) collection below: