New Merc's ''500'' engine (4.6 T)

[AndyBG]

So, now even Mercedes will have V8 turbo before Audi...

http://www.worldcarfans.com/110050726065/new-mercedes-engines-46-liter-v8-biturbo-and-35-liter

[Z07]

The RS5 should have been a V8 Turbo. Audi missed a trick there. Most tests seem to be saying that the NA 4.2 doesn't suit the car sadly. It's a great engine and a great car but the two together just don't work.

[Fab]

Hope your wrong but....