my mate had a small rattle in the engine of his AUII XR8 and just took it back under warranty. Turns out it has worn valve guides...only has 37k on the clock. Is this a common problem, or has he just got a bad one???
unlike some other dealers / brands, there were no hesitations and the car will be back on the road tomorrow fully repaired under warranty.
to the dealer for a good and quick reation