Originally Posted by Giggs
I wouldn't say any engine is "bulletproof". I had heard that the R8 V8 engine is very reliable however mine failed at 28.5k miles. It got a brand new engine but just giving you a heads up, and it aint cheap to replace.
Oh sorry I was referring to the Merc, not R8. The current C-class with the upgraded PP option has the SLS internals and can withstand quite a bit of boost...and I'm assuming the new 4 litre TT motor due in 2014 should be equally as stout and could make some insane power at say 20+psi.