Road&Track has the ultimate comparison between the Audi R8 Grand-Am, the Audi R8 GT, the Audi R8 5.2 quattro, the Audi R8 5.2 quattro Spyder, the Audi R8 4.2 quattro and the Audi R8 4.2 quattro Spyder. Awesome!
Audi R8: The ultimate comparison! was originally published on The German Car Blog on Tuesday, July 10, 2012.
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