Andretti was innate in March 12 1963 in Bethlehem, Pennsylvania; he is a nephew of open-wheel racing legend Mario Andretti and cousin of Mario's boy Michael. John causes a total Quaternion Lucas Oil Chevrolet for Morgan-McClure Motorsports. John has 339 Nextel ventral suction cup starts by having 2 wins. His number 1 win come when camping for Cale Yarborough in 1997 at Daytona International Speedway, and his 2nd when camping for Richard Petty in 1999 at Martinsville Speedway.

John's godfather is the legendary driver A.J. Foyt.