The 31-year-old Ericsson from Kumla, Sweden, led three times for 13 of 200 laps before fending off Pato O'Ward in a two-lap shootout to claim his first Indy 500 title.
The two-time IndyCar Series champion executed a bold final lap pass over teammate Scott McLaughlin to record the 600th overall motorsports victory for Team Penske at the Lone Star state.
Scott Dixon held off Scott McLaughlin for the victory at Texas in the remaining few laps Saturday night. Dixon dominated by leading all but six laps for his first checkered flag of the year.
Josef Newgarden would claim victory for Team Penske to conclude the 2020 IndyCar season. Scott Dixon finished on the podium with a third-place run to claim his sixth IndyCar championship.
Not too far off from Josef Newgarden were championship hopefuls, Scott Dixon and Simon Pagenaud. Pagenaud came into the final race of the season, third in the standings just 42 points back looking for the second championship of his career.
INDIANAPOLIS -- Simon Pagenaud demonstrated the results of the testing in the rain from his sportscar days, as he went from fifth to first in the final 17 laps on the Grand Prix course at Indianapolis Motor Speedway.
Scott Dixon parked his car right in front of Graham Rahal on pit road in the staging area, following the final lap of the NTT IndyCar Series' annual trip to Long Beach, Calif., because he believed Rahal would lose the final podium position for blocking him on the backstretch.
Scott Dixon scored his third win at Texas Motor Speedway when he won the DXC 600, his second win of 2018 and second win in three races. Dixon held off Simon Pagenaud in second, Alexander Rossi in third, James Hinchcliffe in fourth and Ryan Hunter-Reay rounded out the top-five.
