How much larger is the new V10 RS6 engine compared

[cicero5]

to the engine in the RS4?

Just wondered whether the V10 could fit in one of these: http://www.brandes-dschuedow.de/bd_esthi/en/index.html

They currently use the engine from the RS4.

Thanks.

 

[CJ A4]

That must fly with next to no weight on it!