[5] The following year, Lundqvist returned to the renamed Formula STCC Nordic championship with the LL Motorsport Junior Team, where he dominated proceedings to claim ten wins and finish as Drivers and NEZ champion.

[9][10] In July 2017, Lundqvist made his debut in the BRDC British Formula 3 championship, again with Double R.[11] There he achieved three points finishes, the highest being a seventh in the third race.

[15] After taking part in the winter series and pre-season testing with Campos Racing, Lundqvist once again teamed up with Double R to compete in the Euroformula Open Championship.

[18] In a dominant display, Lundqvist claimed sixteen of the eighteen race wins on offer and took the championship title at the penultimate round at Homestead.

[23] On 5 January 2022, Alegra Motorsports announced that Lundqvist would compete alongside Maximilian Götz, Daniel Morad and Michael de Quesada in the #28 Mercedes for the 2022 24 Hours of Daytona.

During the race he regularly ran inside the top 15 positions, until he made a mistake heading into turn 11 and crashed out with only twelve laps remaining.

[35] Meyer Shank Racing announced that Lundqvist would be replaced in the #60 car for the remaining two rounds by Tom Blomqvist, as Pagenaud would not be fit to return.