The 2018 Verizon IndyCar Series was the 23rd season of the Verizon IndyCar Series and the 107th official championship season of American open wheel racing. All teams used a spec Dallara DW12 (IR18) chassis with Honda or Chevrolet power units with respective aero kits, and Firestone tires. The DW12 in IR18 specification feature an all-new universal bodywork, inspired by CART’s 1990s and 2000s cars, but still keep the Dallara DW12 (named in 2012 after Dan Wheldon) chassis base. This new chassis configuration is dubbed the IR18 (Indycar Racing, 2018), and will be used until at least 2022. For the first time since the 1996 Indy Racing League and 2007 Champ Car seasons respectively, cars will have a roll hoop without an airbox.
Graham Rahal in his 6th season with the team scored a best finish of second from the streets of St. Petersburg and finished the championship eighth overall.
|2018||Verizon IndyCar Series|
|Graham Rahal||15||Rahal Letterman Lanigan Racing|
|Dallara DW12 (IR18)||Honda||United Rentals / Mi-Jack|