Newgarden began his motor racing career at the age of 13 years in karting and was until 2006 mainly in this sport actively. Among other things, he won the 2005 and 2006, the TAG Junior World Championship. Even after his move to Formula racing, he joined up in 2009 to some kart races.
In the season 2006/2007 Newgarden made his Formula racing debut in the Skip Barber Southern Regional Series with three wins and won right away the runner-up title in this series. Then he started the 2007 season in the Skip Barber National Series and classified with two wins on the sixth place overall. Newgarden was launched in 2008 to race in various racing series. His main focus he put again on the national Skip Barber, in which he won the runner-up title behind Conor Daly with three wins.
2009 left Newgarden North America and moved to Europe in the British Formula Ford Although he won with nine wins the most races, but had to hit the end of the season James Cole and settle for another runner-up title. He also competed in the first three races of the Formula Palmer Audi and chose two of these races for themselves. 2010 started Newgarden for Carlin in the newly founded GP3 Series. He scored only three points races and finished the season 18th overall.
2011 Newgarden returned to North America, and stood in for Sam Schmidt Motorsports in the Indy Lights. He got along right off the bat in the Indy Lights, winning the season opener in St. Petersburg. Particularly impressive was his victory in Loudon, where Newgarden all other driver had overtaken. With a total of five wins Newgarden decided the championship one race before the season end prematurely for themselves. With 553 to 459 he had almost 100 points ahead of the runner-up, his teammate Esteban Guerrieri.
From 2012 Newgarden debuted for Sarah Fisher Hartman Racing in the IndyCar Series. He received a three - year contract with the team. His debut race in St. Petersburg, he finished in eleventh place. In Long Beach Newgarden started from second place, but already retired on the first lap. At the next race in São Paulo, he scored the fastest lap of the race. In training for the next race, the Indianapolis 500, he scored several personal bests and qualified as the best Honda rider in seventh place. The goal he did not achieve. When Honda Indy Toronto was Newgarden six laps before the end of the fourth position. A collision with Simon Pagenaud led but to the fact that he fell back up to 13th place. In an accident in Sonoma is Newgarden suffered a hand injury and paused at the next race. With an eleventh place as best result he finished the season on top of the 23 rank. 2013 Newgarden scored in the second race of the season in Birmingham with a ninth place its first top- 10 ranking. Two races later in São Paulo, he was fifth. He repeated this result in Long Pond and Houston. In Baltimore, he was the second for the first time in his career on the podium. In the overall standings, he improved to 14th place overall. 2014 Newgarden denies his third IndyCar season for Sarah Fisher Hartman Racing.
- 2004-2009: Karting
- 2007: Skip Barber Southern Regional Series ( 2nd place)
- 2007: Skip Barber National Championship ( 6th place)
- 2008: Skip Barber National Championship ( 2nd place)
- 2008: Skip Barber Mid Western Regional Series ( No. 35 )
- 2008: Skip Barber Eastern Regional Series
- 2009: British Formula Ford (No. 2 )
- 2009: Formula Palmer Audi ( 18th place)
- 2010: GP3 Series ( No. 18 )
- 2011: Indy Lights (Master)
- 2012: IndyCar Series ( No. 23 )
- 2013: IndyCar Series (No. 14)
- 2014: IndyCar Series
Individual results in the GP3 Series
Individual results in the IndyCar Series