Proving grounds track
At the options menu, select "Credits", then "Developers". Wait for the FMV sequence to complete, then hold R1 and press Left, Circle, Up, Down, Right(3) when the credits begin to roll.

Treasure Island track
At the options menu, select "Credits", then "Developers". Wait for the FMV sequence to complete, then hold L2 and press Square, Circle, Square, Up(2), Down, Up, Left, Right, X when the credits begin to roll. Alternatively, win a season on the veteran difficulty setting.

Play as KC Monoxide (#101)
At the options menu, select "Credits", then "Development". Wait for the FMV sequence to complete, then hold L2 and press Square, Circle, X, Down, Up, Right, Left when the credits begin to roll.

Play as "Shorty" Leung (#100)
At the options menu, select "Credits", then "Development". Wait for the FMV sequence to complete, then hold R2 and press Square, Circle, X, Up, Down, Left, Right when the credits begin to roll.

Play as Jocko Michaels (#167)
At the options menu, select "Credits", then "Development". Wait for the FMV sequence to complete, then hold L1 and press Square, Triangle, Square, Circle, Square, X when the credits begin to roll.

Play as Asher Boldt (#153)
At the options menu, select "Credits", then "Development". Wait for the FMV sequence to complete, then hold L2 and press Square, Circle, Triangle, X when the credits begin to roll.

Alternate John Andretti's car
At the options menu, select "Credits", then "Development". Wait for the FMV sequence to complete, then hold R1 and press Square, Triangle, Square, Triangle when the credits begin to roll.

Black Box Classic car
Win the Short Track Challenge to unlock the Black Box Classic car.

Black Box Exotic car
Win the Half Season to unlock the Black Box Exotic car.

EA Sports car
Win the Road Course Challenge to unlock the EA Sports car.

EA.com car
Win the Superspeedway Shootout on either the veteran or legend difficulty settings.