The Pontiac G8 GXP might be the most dangerous car on the used market right now — not because it's fast, but because it's exactly good enough to make you ignore the red flags. Look, I get it. An LS3, rear-wheel drive, available 6-speed, wrapped in a sleeper sedan that GM killed off right when it was getting good. On paper it's the perfect enthusiast buy. In practice, it's a money pit wearing a suit. Here's what we broke down in this one: → Why the LS3 in these isn't the bulletproof motor you're expecting → The manual trans option that sounds amazing until you live with it → How the GXP's low production numbers actually work against you when something breaks → What to cross-shop instead if you want the same vibe without the headaches The real issue isn't that the G8 GXP is a bad car. It's that the asking prices have gotten completely disconnected from the ownership reality. Parts availability on GXP-specific stuff is rough, values have climbed past what the driving experience justif...