Now that Audi's RS4 sedan has dropped out of the North American lineup, the quad-rung automaker is now turning its focus to the RS5 coupe, expected to debut next year in Geneva.

Our friends at Motor Authority have captured the RS5 testing at the Nürburgring. New wheels and a reworked front air dam indicate that this car is near production-spec, though no final word has been given on powertrain. Sources claim that the 4.2-liter V-8 from the RS4 will be used, though power would be boosted to 450 horsepower. Others speculate that the V-10 from the RS6 will be featured, though this seems like a rather costly decision for car meant to battle with the BMW M3 Coupe and Mercedes-Benz C63 AMG.

Click on over to Motor Authority for more details and images.

+ Motor Authority