Scott Dixon's bid for a record-equalling seventh IndyCar title fell short in California.
Dixon and fellow Kiwi Scott McLaughlin were among the five title contenders going into the season finale, the Monterey Grand Prix at Laguna Seca.
But they were never in the hunt as Australian Will Power claimed his second series title, eight years after the first.
Dixon finished the series third, while the rising McLaughlin had a sensational finish to end up fourth in the series.
The 2021 champion Alex Palou produced a sensational drive to claim his first win of the season. The title-chasing Josef Newgarden, who was at the back of the starting grid, was also impressive, roaring through the field to finish second in the race and series.