The Bob-omb cars resemble large Bob-ombs with wheels instead of feet. If they are hit, they will act like a typical Bob-omb and make a huge explosion. They can be used as more effective, makeshift weapons, like using a green shell to make a bigger impact on those in the immediate area. Along with the Mushroom Cars, the Bob-omb Car strangely didn't return in the DS version of Mushroom Bridge.
The Bob-omb Car's actual first appearance was Mario Kart 64, where they are placed at various points on every track. Anyone who runs into one will be damaged. The Bob-omb Car also appears in Battle Mode, where each player out of the game will be turned into a Bob-omb Car and try to destroy players. The Bob-omb Car returns in Mario Kart: Super Circuit, with the same function as the previous game.
- Bob-omb Cars are completely absent from Time Trial for unknown reasons.