Which Pixar character says the catchphrase “Kachow!” in the Cars films?

Lightning McQueen says “Kachow!” in the Cars films.

The catchphrase reflects Lightning's confident, showy personality, especially early in the original Cars. He uses it as a playful exclamation connected to his self-image as a fast and impressive racer. The phrase became one of the character's most recognizable verbal signatures and is strongly associated with his red body and lightning-bolt graphics.

Lightning's personality changes over the franchise. In Cars, his isolation and ambition gradually give way to friendship and humility after his stay in Radiator Springs. Cars 2 places him in the World Grand Prix, while Cars 3 examines his response to younger racers and his evolving role in the sport. The catchphrase remains linked to Lightning even as his priorities mature.

Mater has his own distinctive speech and comic style, but “Kachow!” is not his signature phrase. Chick Hicks and Jackson Storm are rivals rather than the source of Lightning's catchphrase.