Damage was realistically modeled, but could be turned off to make the player's car indestructible. The effect of crashes varies depending on severity. Very minor impacts have no effect. Heavier impacts can cause sheet metal damage, which hurts aerodynamics and may cause engine overheating. A crumpled hood can also make it difficult for the player to see the track. Heavy impacts will damage a wheel or even blow the engine. Damage can be repaired in the pit stop, except for blown engines which are not repairable. Damaged sheet metal is removed, making for an imperfect repair with impaired aerodynamics.