IndyCar Series '1996–pr.
Reynard 97I '1997
Dallara IR8 - Oldsmobile Aurora '1998
G-Force GF01B - Oldsmobile Aurora '1998
Dallara DW12 (IR-12) '2012–14
The Dallara DW12's race début was at the 2012 Honda Grand Prix of St. Petersburg on March 25, 2012. Team Penske's Will Power won the inaugural pole and Hélio Castroneves won the first race with the DW12.
Dallara DW12 (IR-18) '2018–23
In March 2017, IndyCar Series announced that the DW12 would receive a redesign and facelift of its aerodynamic system, with all cars to run identical aero kits at all races starting in 2018. Codenamed UAK18 (Universal Aero Kit 2018), the base Dallara safety cell design will remain as-is: however, several components, including the airbox and rear-wheel guards, will be removed. The latter were removed as research showed that they were largely ineffective in reducing large crashes and would often break easily, as would other extraneous winglets.
WheelsAge.org '2005–pr.