[3] He took only one win throughout the campaign at the Algarve International Circuit, which placed him runner-up in the standings to the dominant Stefan Wackerbauer, the only other race winner of the season.

[28] He took a double pole position for the Paul Ricard opener,[29] before winning the final race despite a last lap clash with teammate Nick Cassidy.

[30] The second round in Monza was a mirror of Paul Ricard], as Günther again won whilst scoring a double pole, allowing him to take the championship lead.

[31][32] Over the next three rounds, Günther manage three third-places, as his title rival Lance Stroll snatched the standings lead with a handful of wins.

[37] At the end of the season, Günther raced in his debut Macau Grand Prix with Prema, which went unrewarded as a broken suspension following contact with a rival forced him to retire.

[38] Günther continued in the FIA Formula 3 European Championship for 2017, once again for Prema Powerteam alongside Callum Ilott, Guanyu Zhou and Mick Schumacher.

[44] Despite collecting more podiums following that, Günther only won again during the final race of the season in Hockenheim, by then he had dropped out of title contention as eventual champion Lando Norris sealed six more wins.

[54] After signing with GEOX Dragon in Formula E, Günther vacated his seat at BWT Arden for the Yas Marina season finale and was replaced by Red Bull junior driver Dan Ticktum.

[63] For the 2019–20 season, Günther was signed to race for BMW i Andretti Motorsport to replace Antonio Felix da Costa after he moved to reigning champion team DS Techeetah.

[64] The second race of the season in Diriyah saw Günther take a maiden podium in second place behind teammate Alexander Sims, but was demoted to 11th after passing Lucas di Grassi under safety car conditions.

[78] Günther took his sole win of the season the New York City ePrix, taking advantage of a late-race collision between Jean-Éric Vergne and Nick Cassidy.

[83] His first points for the team at the Mexico City ePrix would prove to be a red herring, as the German struggled to finish close to teammate Sébastien Buemi throughout the races.

[85] The second and final top-ten finish of his campaign would come at the London ePrix, during a weekend where a collision with Nick Cassidy earned Günther critical comments from the New Zealander.

[94] He finally broke his points duck during the first race at the Berlin ePrix, where a last-corner overtake on Sébastien Buemi earned him a place on the rostrum.

[104] Günther scored another third-placed podium during the first race of the Rome ePrix after good energy management;[105] he would finish in sixth place the following day.

[107] Günther finished the season seventh in the drivers' standings with 101 points, one win, two poles and four podiums, his best Formula E campaign to date.

[108] Günther remained with Maserati MSG Racing for the 2023–24 season alongside a new teammate, Formula 2 driver Jehan Daruvala who replaces Edoardo Mortara who went over to Mahindra.

[112] Starting on the front row for the 2024 Tokyo ePrix, he was engaged in a battle for the lead with Oliver Rowland, but Günther emerged victorious to secure his first win of the season.

[113][114] He scored a third place podium during the first race of the Misano ePrix, being promoted to the rostrum post-race after winner António Félix da Costa was disqualified.

[116] The second half of the season would prove to be more difficult for Günther, as a ninth place in Monaco was followed by a double retirement in his home Berlin ePrix.

[127] In 2022 Günther drove an endurance racing car for the first time, driving the Peugeot 9X8 Le Mans Hypercar during the post-season test at the Bahrain International Circuit.