"wrecked"? ...unlikely

Accident? Sure. Repairs not performed properly? Niggling issues that BMW was unable to really fix and were an 'almost lemon'? yes. Mods that BMW will then deny warranty coverage? yes.

So have it inspected or do it yourself- before you buy. If it is a 100% stock car with no mods, nothing disturbed, no unexplained service history- then yes the new car warranty is as good as it gets.