Eight vehicles were used throughout the event. Returning from the
2014 Race of Champions were the
Ariel Atom Cup, the
KTM X-Bow, the ROC Car and the
NASCAR Chevrolet SS Stock Car as used in the
NASCAR Whelen Euro Series. Introduced for 2015 were the
Mercedes-AMG GT, the
Radical SR3 RSX and the
Rage Comet, while the
RX 150 returned after an absence of several years. ==Nations' Cup==