The new Audi RS6, which will be equipped with a 5.0L V10 twin turbo, will churn out 571HP. This information comes from the vehicle registration details of a mule which reveal the vehicle's technical specifications. The chassis code for the RS6 is 'Audi AG 4F 7967 21 AAJ N31 N30 579 426 5002'. The third last number indicates that the RS6 will have 579ps (metric unit), which is equivalent of 571HP. The second last number indicates the car will have 426kw whilst the last number indicates the engine capacity, 5002cc.
According to Motor Authority, a more powerful variant of the RS6 will be unveiled following the release of the conventional RS6 and Avant. The "Plus" model is speculated to have around 620HP, which will no doubt blow the competition away.
[Source: Motor Authority]