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. The premier event was the 102nd Indianapolis 500, with Takuma Sato entering as the defending Indianapolis 500 winner. Josef Newgarden entered the season as the defending National Champion.

The season marked the debut of a new universal aerokit, replacing the manufacturer-designed kits used from 2015 to 2017.

2018 IndyCar Series

It was the final season for Verizon Communications as the series sponsor as well as being the final season that the series was broadcast by both ABC and NBC Sports. A new series sponsor was introduced and NBC became the sole broadcaster for the series beginning in the 2019 season.

2018 IndyCar Series

Honda won the engine manufacturer's championship for the first time since 2005 as an engine manufacturer competitor. Robert Wickens won Rookie of the Year despite missing the final three races after the season was overshadowed by a near life ending crash by Wickens at the ABC Supply 500 at Pocono that left him paralyzed. James Hinchcliffe won the most popular driver award. Will Power won the 102nd Indianapolis 500. Scott Dixon won his fifth IndyCar title, and is now second to A. J. Foyt's all-time record for United States open wheel titles. Dixon won three races over the course of the season.

2018 IndyCar Series

Series news

On October 20, 2017, Verizon Communications announced that it would exit its title sponsorship deal for the series after the 2018 season. This will not affect its vehicle sponsorship with Team Penske. PFC became the IndyCar Series' brake caliper supplier beginning in the 2018 season. Kyle Novak was confirmed as Race Director on January 5, replacing Brian Barnhart, who left to become president of Harding Racing. The three-man stewarding panel of Dan Davis, Arie Luyendyk and Max Papis, introduced when Barnhart was first named Race Director, will remain intact. On March 21, 2018, NBC Sports (which serves as the existing cable rightsholder of the series through NBCSN) announced that it would become the sole television rights-holder of the IndyCar Series from 2019 through 2021, replacing the previous split between ABC and NBCSN. Eight races per season will air on NBC, including the Indianapolis 500.

Technical changes

All IndyCar Series machines feature an all-new universal bodywork, inspired by CART's 1990s and 2000s bodywork, but still keep the Dallara DW12 chassis base. This new chassis configuration is dubbed the IR18, 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. All IndyCar Series entrants will begin utilizing F1-style LCD steering wheel display dashes, a new Cosworth CCW Mk2 steering wheel with a configurable display unit, and new electronic components. The current Cosworth-Pi Research Sigma Wheel Display dash had been used since the 2000 season will be retired permanently, but several teams will opt to keep the old Cosworth Sigma Wheel Display dash for one more season due to cost reasons. Due to the reduced amount of downforce produced by the 2018 spec aerokits, Firestone introduced new rain tires to improve grip in wet conditions for road/street races. In the next step to increase driver safety through cockpit protection, IndyCar announced that Scott Dixon would test a windscreen, a possible alternative to the 'halo' device used by Formula One, at ISM Raceway on February 8.

Confirmed entries

The following teams, entries, and drivers have been announced to compete in the 2018 Verizon IndyCar Series season. All teams will use a spec Dallara DW12 chassis with UAK18 aero kit and Firestone tires.

Team changes

Chip Ganassi Racing announced that the team will scale down to a two-car team for the first time since 2010 due to cost efficiency, with Scott Dixon remaining at the No. 9 car. CGR announced on October 25, 2017, that 2017 IndyCar Series Rookie of the Year Ed Jones would drive the No. 10 car in 2018, replacing Tony Kanaan.

Team Penske also downsized to three cars, due to Hélio Castroneves moving to Team Penske's WeatherTech SportsCar Championship team from the 2018 season onwards. However, Castroneves returned for the 2018 Indianapolis 500 with Team Penske for a one-off appearance.

Michael Shank Racing competed in six races in the 2018 season with driver Jack Harvey, with a technical partnership with Schmidt Peterson Motorsports. The team was renamed Meyer Shank Racing on April 6, 2018, after Sirius XM CEO Jim Meyer joined as a team co-owner.