What is the name of the racing league featured in Pixar’s Cars?

The racing league featured in Pixar’s Cars is the Piston Cup.

The Piston Cup is the film’s fictional stock-car racing championship. Lightning McQueen is a rookie competitor attempting to win the season finale, while veteran racer The King and aggressive rival Chick Hicks are among the other major entrants.

The name is a playful reference to real motorsport trophies and engine terminology. The films use fictional league names and sponsors so that the racing world can function as its own setting, although many details resemble NASCAR and other American stock-car traditions.

The Piston Cup is also associated with Dinoco, a fictional fuel company whose blue-and-orange branding appears throughout the series. Cars 3 continues the Piston Cup storyline by showing a new generation of racers challenging established stars. The World Grand Prix, by contrast, is the international competition introduced in Cars 2.