As a direct competitor to the Mercedes E63 AMG and BMW M5, which have both been presented a while ago, Audi is planning to offer the RS6, seen here undergoing final tests at the German Nürburgring.
The bigger air intakes in the front bumper, the wider fenders and the diffuser at the rear are the key clues. While the S models have four round exhaust pipes, the RS models will receive oval pipes as their distinguishing feature.
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