in Austin, Texas, was built to Formula One specifications to host the United States Grand Prix starting in 2012. Situated in the rolling hills southeast of the city, it is a 20-turn, road course. In 2018, Phoenix was removed from the 2019 IndyCar Series schedule, which opened up a gap in the calendar. At the same time, COTA chairman and CEO Bobby Epstein emphasized the track's desire to be fully prepared for hosting a new event after previously concentrating on its F1 and MotoGP races. Furthermore, a territorial restriction agreement that the IndyCar Series had with Texas Motor Speedway had previously prevented the series from running races at COTA or other venues in Texas. However, negotiations between IndyCar and TMS president Eddie Gossage resulted in the series giving the track a discounted sanction fee in exchange for TMS allowing the series to schedule other races in Texas. At the time of the negotiations in August 2018, Jim Ayello of The Indianapolis Star speculated that the new deal between the series and TMS would allow IndyCar to run at either COTA or a new street circuit in San Antonio. Ultimately, the series scheduled a race in Austin as a replacement for its former Phoenix race. While Gossage had previously expressed concern that Texas could not adequately support two IndyCar races, Epstein opined that TMS and COTA are far enough apart that their races will not adversely affect each other. The IndyCar Classic was one of two additions to the 2019 IndyCar Series schedule, which officially revealed that COTA had obtained a race as part of a multi-year agreement when it was released on September 4, 2018. COTA was joined on the 2019 schedule by a revived Grand Prix of Monterey on September 22, the season finale and the first IndyCar race at Laguna Seca in 15 years. COTA's IndyCar Classic was the second race of the 2019 season, following the season-opening Grand Prix of St. Petersburg two weeks earlier on March 10. The placement of the Austin race, as well as the forward shift of the Grand Prix of Alabama that followed it, reduced the number of long gaps in the early portion of the season. The 2019 IndyCar Classic was also the first time that American open-wheel cars and F1 have raced at the same track during the same season since 2006, when the now-defunct Champ Car series and F1 both raced at Montreal. As of September 2018, COTA was considering modifying its track layout for the IndyCar Classic, similarly to what it had previously done for the Australian-based V8 SupercarsAustin 400 race, but Epstein did not speculate about what modifications might be made. In its F1 layout at in length, COTA is the second-longest track on IndyCar's 2019 schedule, trailing only Road America at long.
Testing
In late October 2018, Tony Kanaan and Alexander Rossi became the first IndyCar drivers to test at COTA. The entire field of full-season drivers tested at the track for the series-mandated IndyCar Spring Training on February 12–13, 2019. The second day featured an open period during which each team had 11 hours to test the performance of its cars, while there was also nearly 5 hours of testing for Indy Lights teams. Rookie Colton Herta described the racing at COTA as likely to be "spectacular" because of the overtaking opportunities it offers. Rossi, who finished 12th in the 2015 United States Grand Prix at COTA racing for Manor Marussia, stated he was "very happy" that the IndyCar Series is "headed to the best road course". He also described COTA as "unlike any other track...by far the smoothest, widest track that we have". Andretti Autosport CEO Michael Andretti added that he had "been pushing for this race for a long time".
2019
The inaugural IndyCar Classic was held at COTA on March 24, 2019. It was a 60-lap event that was won by rookie Colton Herta of Harding Steinbrenner Racing, who became the youngest race winner in IndyCar Series history at 18 years, 11 months, and 25 days of age. For the inaugural race in 2019, Muse played a headlining concert the night before the race, on Saturday, March 23. Additional concerts and RVcamping took place during the entire race weekend, between Friday, March 22, and Sunday, March 24.
2020
The 2020 IndyCar Challenge was cancelled due to the COVID-19 pandemic, as were the Grand Prix of St. Petersburg, Grand Prix of Alabama, and Grand Prix of Long Beach.
