notes: 1996 -- Indy Car founded as Indy Racing League; championship split when Scott Sharp and Buzz Calkins finished tied on points and no tiebreaking format had been announced; 2003 -- series became Indy Car; 2008 -- merged with Champ Car World Series under Indy Car banner
| YEAR | WINNER | TEAM | MAKER | WINNERS NATIONALITY |
|---|---|---|---|---|
| 1996 | Scott Sharp | A.J. Foyt Enterprises | Ford-Cosworth | United States |
| and | Buzz Calkins | Bradley Motorsports | Ford-Cosworth | United States |
| 1997 | Tony Stewart | Team Menard | Oldsmobile | United States |
| 1998 | Kenny Brack | A.J. Foyt Enterprises | Oldsmobile | Sweden |
| 1999 | Greg Ray | Team Menard | Oldsmobile | United States |
| YEAR | WINNER | TEAM | MAKER | WINNERS NATIONALITY |
|---|---|---|---|---|
| 2000 | Buddy Lazier | Hemelgram Racing | Oldsmobile | United States |
| 2001 | Sam Hornish Jr | Panther Racing | Oldsmobile | United States |
| 2002 | Sam Hornish Jr | Panther Racing | Chevrolet | United States |
| 2003 | Scott Dixon | Chip Ganassi Racing | Toyota | New Zealand |
| 2004 | Tony Kanaan | Andretti Green Racing | Honda | Brazil |
| 2005 | Dan Wheldon | Andretti Green Racing | Honda | England |
| 2006 | Sam Hornish Jr | Penske Racing | Honda | United States |
| 2007 | Dario Franchitti | Andretti Green Racing | Honda | Scotland |
| 2008 | Scott Dixon | Chip Ganassi Racing | Honda | New Zealand |
| 2009 | Dario Franchitti | Chip Ganassi Racing | Honda | Scotland |
| YEAR | WINNER | TEAM | MAKER | WINNERS NATIONALITY |
|---|---|---|---|---|
| 2010 | Dario Franchitti | Chip Ganassi Racing | Honda | Scotland |
| 2011 | Dario Franchitti | Chip Ganassi Racing | Honda | Scotland |
| 2012 | Ryan Hunter-Reay | Andretti Autosport | Chevrolet | United States |
| 2013 | Scott Dixon | Chip Ganassi Racing | Honda | New Zealand |
| 2014 | Will Power | Team Penske | Chevrolet | Australia |
| 2015 | Scott Dixon | Chip Ganassi Racing | Chevrolet | New Zealand |
| 2016 | Simon Pagenaud | Team Penske | Chevrolet | France |
| 2017 | Josef Newgarden | Team Penske | Chevrolet | United States |
| 2018 | Scott Dixon | Chip Ganassi Racing | Honda | New Zealand |
| 2019 | Josef Newgarden | Team Penske | Chevrolet | United States |
| YEAR | WINNER | TEAM | MAKER | WINNERS NATIONALITY |
|---|---|---|---|---|
| 2020 | Scott Dixon | Chip Ganassi Racing | Honda | New Zealand |
| 2021 | Alex Palou | Chip Ganassi Racing | Honda | Spain |
| 2022 | Will Power | Team Penske | Chevrolet | Australia |
Multiple Championships: Scott Dixon (6); Dario Franchitti (4); Sam Hornish Jr (3); Josef Newgarden and Will Power (2)
Consecutive Championships: Dario Franchitti (3); Sam Hornish Jr (2)
Multiple Owner Championships: Chip Ganassi Racing (10); Penske Racing/Team Penske (6); Andretti Green Racing (3); A.J. Foyt Enterprises, Team Menard, and Panther Racing (2)
Consecutive Owner Championships: Chip Ganassi Racing (4); Panther Racing, Andretti Green Racing, and Chip Ganassi Racing (2)
| Total Championships by Maker (29 total) | ||
|---|---|---|
| 1. | Honda | 12 |
| 2. | Chevrolet | 8 |
| 3. | Oldsmobile | 5 |
| 4. | Ford-Cosworth | 2 |
| 5. | Toyota | 1 |
| Total Championships by Nationality (28 total) | ||
|---|---|---|
| 1. | United States | 11 |
| 2. | New Zealand | 6 |
| 3. | Scotland | 4 |
| 4. | Australia | 2 |
| 5. | Sweden | 1 |
| Brazil | 1 | |
| England | 1 | |
| France | 1 | |
| Spain | 1 | |