Audi shows off lightweight aluminum/carbon fiber A5 prototype. Audi Aluminum A5 Coupe Prototype – Click above for high-res image. By [email protected]. Oct 1, 2009 8:53 AM EDT.

As part of Audi's new strategy of using odd numbers for combustion vehicles, the B10-series A5 replaces the B9-series A4 in the German automaker's lineup. Coming to the US market for the 2026 ...