Powered by the same V10 engine as the S6, but with some help from a turbo delivering about 520-550 bhp, this Audi will give the M5 and E63 AMG a strong challenge. The RS6 will debut in Geneva in March 2007.

Powered by V10 turbo

Audi is completing the A6 range with the RS6 as an direct competitor to BMW’s M5. Don’t get fooled by the S6 stickers on this Audi. This is the brand new and still secret RS6. The bigger air intakes in the front bumper and the two big oval exhaust pipes are the key clues. While the S models have four round exhaust pipes, the RS models have two oval pipes as their distinguishing feature. Shown in these spy photos is the Avant (station wagon), but it will also be available as a saloon. Powered by the same V10 engine as the S6, but with some help from a turbo delivering about 520-550 bhp, this Audi will give the M5 and E63 AMG a strong challenge. The RS6 will debut in Geneva in March 2007.

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SPY PHOTOS: New Audi RS6