1996: Debut season during practice for the 1996 Miller 200 at
Mid-Ohio Sports Car Course. After testing for Forsythe Racing at Phoenix International Raceway in September 1995, the team's primary sponsor,
Player's, confirmed on October 19 that Moore would replace the outgoing
Jacques Villeneuve for the
1996 season. He spent 30 days testing for the team in the United States, and underwent a conditioning program to prepare himself physically with the
turbocharged No. 99
Reynard 96I Mercedes-Benz IC108
V8t for the to races. Fellow drivers did not give him much advice so Moore observed them. He debuted at the season-opening
Grand Prix of Miami at the
Homestead–Miami Speedway. Starting in sixth he finished in seventh, after incurring a stop-and-go penalty for an illegal overtake on
Juan Manuel Fangio II under
yellow flag conditions, and
unlapped himself from the race winner,
Jimmy Vasser. He bettered that result with a second-place finish at Nazareth Speedway two rounds after that. Although Forsythe Racing had sub-par equipment, he regularly challenged for victories and claimed three podium finishes. He began the season with three top-four finishes—including second-places at Surfers Paradise and
Autódromo Internacional Nelson Piquet—in the first six races. He held off
Michael Andretti to take his first career victory becoming—at the age of 22 years, 1 month and 10 days—the youngest driver to win a CART race. A week later, he won the ITT Automotive Detroit Grand Prix at The Raceway on Belle Isle after
PacWest Racing teammates
Maurício Gugelmin and
Mark Blundell ran out of fuel on the final lap. Thereafter Moore, who was considered a contender for the championship, achieved two top-five finishes at
Mid-Ohio Sports Car Course and Portland International Raceway as mechanical attrition and accidents hindered him. He was seventh in the points standings with 111.
1998: Fifth place in points For the
1998 season, Moore drove a Reynard car with a lighter and smaller Mercedes-Benz engine, and built up his endurance for races in training. Nevertheless, Moore continued driving well, taking another three top-ten finishes in the next three races becoming the drivers' championship leader. The rest of his season included five consecutive retirements, despite his engine lacking traction on road courses. He placed fifth in the drivers' standings with 141 points,
1999: Final season Entering the
1999 season, CART's fanbase and the media considered Moore a favourite to win the title. He spent much of the pre-season testing on road and street courses, telling the
New York Daily News his objective for the season was to win as many races as possible and claim the drivers' championship. He led 96 laps in his fifth career win at the season-opening round, the
Grand Prix of Miami, from the pole position. He finished in the top ten four more times over the next six races, losing the lead in the points standings after a 12th-place finish at the season's fourth round, the
Bosch Spark Plug Grand Prix at Nazareth Speedway. He concluded the season tenth with 97 points in the drivers' championship. He admitted to being interested in NASCAR, and established friendships with drivers such as
Jeff Burton, and discussed competing in stock cars with
Bobby Labonte. Moore told
USA Today: "I think your career can be longer over there. You can be older and still be competitive because of the way the cars are. It's not as physically demanding. It's more a thinking-man's kind of thing." He discussed driving for
Cal Wells'
PPI Motorsports team, and with
Andy Petree Racing. Moore entered into discussions with Forsythe Racing on June 30. In August 1999, Moore signed a $10 million three-year contract to replace
Al Unser Jr. at Penske's CART team from 2000 onward alongside
Gil de Ferran. According to CART driver
Tony Kanaan, Moore planned to spend three to four more years in CART, before entering NASCAR. ==Other racing ventures==