Understand what "worst case" means, sure many cars don't have the issue but enough do have these issues.
One of many paint problem threads - http://www.g8board.com/forums/showthread.php?t=4109
Lifter failure, lots of these threads around - http://www.g8board.com/forums/showthread.php?t=149810
Shimmy, lots of these threads around too - http://www.g8board.com/forums/showthread.php?t=46325
I'd be all over a G8 if the paint issue didn't exist - most cars will rust up here in Ontario before the motor ever gives out, so good paint is important unless i want to drop $4K on a paint job