The 2023 NTT IndyCar Series was the 112th official championship season of American open-wheel racing and the 28th season under IndyCar Series sanction. The showcase event was the 107th Indianapolis 500, which was won by Josef Newgarden.
Álex Palou, driving for Chip Ganassi Racing, won his second championship, with his first coming in 2021. The victory was also the 15th for Chip Ganassi Racing. Palou secured the championship at the penultimate round of the season in Portland, the first time a driver had won the championship before the season finale since Sébastien Bourdais' championship victory in the 2007 Champ Car World Series.
Background and series news Will Power of Team Penske entered the season as the reigning drivers' champion, having won the title at the final round in Laguna Seca by 16 points over his teammate Josef Newgarden. Defending Indianapolis 500 winner Marcus Ericsson entered 2023 in a contract year for Chip Ganassi Racing. In February 2023, 2013 Indianapolis 500 winner and 2004 IndyCar Series champion Tony Kanaan announced that he would retire from IndyCar after the Indianapolis 500.
The 2023 season saw several marketing changes intended to increase domestic viewership of the series. On December 8, 2022, the CW Network announced a reality documentary series titled 100 Days to Indy, which would premiere on April 27, 2023. Produced by Vice Media, Penske Entertainment president Mark Miles noted that Penske Entertainment would receive some monetary compensation in return for facilitating behind-the-scenes access. In February 2023, it was confirmed that the series organizer, Penske Entertainment Corp., planned for a marketing budget of approximately US$17 million focusing on 20 markets deemed important by series leadership. In February 2023, it was reported by Marshall Pruett of Racer.com that the annual Leader's Circle contracts earned by entries which compete in the full season would be reduced by $150,000 each to a value of $910,000. The money was allocated towards the Series' marketing budget.
In addition to these changes by the series, new sponsorships were announced including that British oil and gas company Shell would replace Speedway LLC as an official fuel partner and supplier, with the series introducing a 100% renewable fuel and thus marked for the second time the series utilized the non-American oil and gas company since 2007 Champ Car World Series season when French oil company Elf Aquitaine supplied a Methanol fuel to all entrants.
On February 2, 2023, the championship's sanctioning body announced that the Indianapolis 500 would no longer be a double points-paying race, ending a rule that was first established in 2014.
In addition to criticism about series marketing faced after the 2022 season, Penske Entertainment faced criticism when 2022 Indy Lights champion Linus Lundqvist was unable to obtain a seat for the 2023 IndyCar season. In response to this, PEC added $350,000 to the champions advancement prize for the now-renamed 2023 Indy NXT. Lundqvist would later make his IndyCar debut as a mid-season injury substitute at Nashville.
The series' tire supplier Firestone announced the expanded use of tires made from guayule rubber as the "alternate" tire (which must be used for at least two green-flag laps every race) for all street circuit races, and introduced alternate tires on an oval for the first time at WWTR.
The 2023 season was scheduled to be the final season using the current 2.2-liter V6 twin-turbocharged engine formula that made its debut in the 2012 season. A new 2.4-liter V6 twin-turbocharged hybrid engine formula was meant to debut in the series from 2024 onwards. However, on December 6, 2022, it was announced that these plans would be put on hold and the hybrid technology will instead be implemented on the current 2.2-liter engines for 2024.
Confirmed entries The following teams, entries, and drivers competed in the 2023 NTT IndyCar Series season. All teams used a spec Dallara IR18 chassis with universal aero kit and Firestone tires.
TeamEngineNo.Driver(s)Round(s) Abel Motorsports Chevrolet 50 R. C. Enerson 6 A. J. Foyt Enterprises Chevrolet 14 Santino FerrucciAll 55 Benjamin Pedersen All Andretti Autosport with Curb-Agajanian Honda 26 Colton HertaAll Andretti Autosport 27 Kyle KirkwoodAll 28 Romain GrosjeanAll Andretti Steinbrenner Autosport 29 Devlin DeFrancescoAll Andretti Herta Autosport with Marco Andretti and Curb-Agajanian 98 Marco Andretti6 Arrow McLaren Chevrolet 5 Pato O'WardAll 6 Felix RosenqvistAll 7 Alexander RossiAll 66 Tony Kanaan6 Chip Ganassi Racing Honda 8 Marcus EricssonAll 9 Scott DixonAll 10 Álex PalouAll 11 Marcus Armstrong Takuma Sato2, 6, 11–12, 15 Dale Coyne Racing with HMD Motorsports Honda 18 David MalukasAll Dale Coyne Racing with Rick Ware Racing 51 Sting Ray Robb All Dreyer & Reinbold Racing Chevrolet 23 Ryan Hunter-Reay6 24 Stefan Wilson 6 Graham Rahal 6 Ed Carpenter Racing Chevrolet 20 Conor Daly1–7 Ryan Hunter-Reay8–17 21 Rinus VeeKayAll 33 Ed Carpenter2, 6, 11–12, 15 Juncos Hollinger Racing Chevrolet 77 Callum IlottAll 78 Agustín Canapino All Meyer Shank Racing Honda 06 Hélio CastronevesAll 60 Simon Pagenaud1–9 Conor Daly 9, 11–12 Tom Blomqvist 10, 16–17 Linus Lundqvist 13–15 Rahal Letterman Lanigan Racing Honda 15 Graham RahalAll 30 Jack Harvey1–14 Conor Daly15 Jüri Vips 16–17 44 Katherine Legge6 45 Christian LundgaardAll Team Penske Chevrolet 2 Josef NewgardenAll 3 Scott McLaughlinAll 12 Will PowerAll
Álex Palou contract dispute On July 12, 2022, Chip Ganassi Racing sent a press release saying that they had extended the contract of Álex Palou for the 2023 IndyCar season by exercising the option they held on his deal. Included in the press release was a quote attributed to Palou. Hours later, Palou, via a thread on Twitter denounced this press release, claimed that the quote attributed to him was created by the team (a practice common among IndyCar teams, according to RACER.com'''s Marshall Pruett) and also not approved by him. He also stated that he had given Chip Ganassi Racing prior notice that he intended to leave the team after the 2022 season and join McLaren Racing's roster of drivers. Moments after these tweets, McLaren announced that they had signed Palou to a contract for 2023, though it was not specifically mentioned if Palou would drive for Arrow McLaren SP, McLaren's IndyCar operation. Chip Ganassi Racing responded to this by releasing a statement reiterating their claim to Palou's services. On July 27, 2022, Chip Ganassi Racing confirmed they had filed a civil lawsuit against Palou in Marion County, Indiana. On September 14, 2022, it was announced that an agreement had been reached by all parties that would see Palou continue with Chip Ganassi for the 2023 season, and McLaren subsequently confirmed Felix Rosenqvist would be returning to AMSP.
Driver changes Preseason
On June 2, 2022, Arrow McLaren SP confirmed the signing of Alexander Rossi for 2023 in a third entry. He departed Andretti Autosport after seven years with the team. On June 6, 2022, Andretti Autosport announced that 2021 Indy Lights champion Kyle Kirkwood would replace Rossi in the No. 27 entry, switching from A. J. Foyt Racing. On September 26, 2022, Jimmie Johnson announced that he would step back from racing on a full-time basis. Johnson had competed full-time in the 2022 season for Chip Ganassi Racing. On September 28, 2022, A. J. Foyt Racing confirmed the signing of Benjamin Pedersen to a multi-year contract. The Danish-American moved up from Indy Lights where he finished 5th in the championship with 1 win in 2022. On October 6, 2022, A. J. Foyt Racing confirmed they had signed Santino Ferrucci to drive the No. 14 entry. Ferrucci spent 2022 driving in two races as an injury substitute, the Indianapolis 500 for Dreyer & Reinbold Racing, and two NASCAR Xfinity Series races. On October 11, 2022, Dalton Kellett announced that he would not be returning to A. J. Foyt Racing after three seasons with the team. Kellett had met with the team earlier to discuss running a third entry after the signing of Ferrucci and Pedersen. On November 1, 2022, Arrow McLaren SP confirmed that Tony Kanaan would drive a fourth entry for the team at the Indianapolis 500. Kanaan moves from Chip Ganassi Racing, where he finished 3rd in the race in 2022. On November 17, 2022, Dreyer & Reinbold Racing announced that it had formed a partnership with Cusick Motorsports to field their driver Stefan Wilson in DRR's No. 24 entry in the Indianapolis 500. Wilson replaces Sage Karam, who ran the Indianapolis 500 the last seven years for DRR. On December 2, 2022, Chip Ganassi Racing announced that they had signed Marcus Armstrong to race the road and street course races in its No. 11 entry. Armstrong moved over from Hitech Grand Prix in the FIA Formula 2 Championship, where he won 3 races in 2022. The entry replaced the No. 48 entry driven by Johnson. On January 17, 2023, Takuma Sato was announced to join CGR to drive in "oval competition", including the Indianapolis 500. He left Dale Coyne Racing after one season with the team. On March 3, 2023, The Indianapolis Star quoted a clarification by Ganassi that the deal with Sato was only in place for Texas and Indianapolis, with its presence at Iowa and Gateway "to be determined". On June 20, Ganassi confirmed that Sato would compete in all remaining oval races for the season. On January 18, 2023, Dale Coyne Racing with Rick Ware Racing confirmed 2022 Indy Lights runner-up Sting Ray Robb as Sato's replacement in the No. 51 entry.
Midseason On March 15, 2023, Dreyer & Reinbold Racing announced that 2014 Indianapolis 500 winner Ryan Hunter-Reay will drive the No. 23 entry in the Indianapolis 500. On May 22, 2023, Dreyer & Reinbold Racing / Cusick Motorsports driver Stefan Wilson was injured in a crash during practice for the Indianapolis 500 and was not medically cleared to continue in the event. On May 23, Graham Rahal, whose regular Rahal Letterman Lanigan Racing entry was bumped from the field, was confirmed as Wilson's injury replacement. On June 7, 2023, Ed Carpenter Racing confirmed that it had parted ways with driver Conor Daly. The following day, the team announced that Ryan Hunter-Reay had been signed to drive the No. 20 through the remainder of the season. On July 2, 2023, Meyer Shank Racing driver Simon Pagenaud was not medically cleared to race following a crash in practice the previous day at Mid-Ohio. Conor Daly was confirmed to substitute for Pagenaud for the race at Mid-Ohio and for the doubleheader rounds at Iowa. MSR IMSA driver Tom Blomqvist substituted at Toronto, making his IndyCar debut. 2022 Indy Lights champion Linus Lundqvist substituted at Nashville (also making his IndyCar debut), the second Indy Road Course Race and the race at WWTR. On August 28, it was confirmed that Pagenaud wouldn't return to the No. 60 for the rest of the season, and Blomqvist will be subbing at the last two rounds of the season at Portland & Laguna Seca. On August 15, 2023, Rahal Letterman Lanigan Racing announced that it had parted ways with driver Jack Harvey and would use the final 3 races of the season to evaluate other talent, starting with Conor Daly for the following race at WWTR. On August 28, 2023, it was announced that former FIA Formula 2 driver Jüri Vips would run in the No. 30 for the final two races of the year at Portland and Laguna Seca.
Team changes Preseason On September 7, 2022, Juncos Hollinger Racing announced that they would expand to two entries. On January 12, 2023, they confirmed Agustín Canapino as the full-time driver of the No. 78. On September 20, 2022, Taylor Kiel announced that he was leaving his role as president of Arrow McLaren SP on his own volition with immediate effect.