Which company does Lightning McQueen race for in Pixar’s Cars 3?

Lightning McQueen races for Rust-eze in Pixar’s Cars 3.

Rust-eze is the sponsor associated with Lightning from the beginning of the Cars story. In the first film, the brand is represented by brothers Rusty and Dusty Rust-eze, who discover Lightning after his victory and sign him as their sponsored racer.

By Cars 3, Lightning is still identified with the Rust-eze team even as newer racers and larger sponsors reshape the sport. The film’s central conflict comes from his struggle to remain competitive against technologically advanced racers such as Jackson Storm.

Dinoco is the famous blue sponsor linked to The King and later to Lightning after the original film’s finale, so it is a plausible source of confusion. However, the Cars 3 racing identity shown for Lightning remains Rust-eze. The sponsor’s name is a pun on rust, matching the brand’s focus on helping old cars.