The season produced one of the most closely contested title fights in Formula E's history. Cassidy led the standings for much of the European leg after a strong run through Berlin and Monaco, building a 25-point advantage following Shanghai. However, a catastrophic double-header at Portland — where Cassidy failed to score in either race due to a crash in the first and a collision in the second — swung the momentum decisively toward Wehrlein.
The London penultimate round tightened the championship to seven points in Wehrlein's favour heading into the finale. At the final London race, Cassidy took pole but was struck by António Félix da Costa in a racing incident and suffered a puncture that ended his title bid. Wehrlein won the championship after Mitch Evans failed an attack mode activation that would have kept him ahead, gifting Wehrlein second place and the points margin required for the title.
Jaguar's pair of Evans and Cassidy — both individually competitive over the season — secured the Teams' Championship for the Coventry-based manufacturer. The Manufacturers' Cup, a new parallel competition awarding points to the top two finishers from each powertrain supplier per race, was also won by Jaguar.
The season introduced several notable debut circuits. The Tokyo ePrix marked the first time an FIA World Championship event was held in Tokyo. The Shanghai ePrix returned Formula E to China for the first time since the Sanya ePrix in the 2018–19 season. The Misano ePrix debuted on the Misano World Circuit Marco Simoncelli, replacing the Rome ePrix. Portland hosted a double-header after featuring only a single race in Season 9. The Hyderabad ePrix was cancelled ahead of the season due to a change of regional governance. Cape Town, Jakarta, and Rome did not appear on the calendar.
Nick Cassidy moved from Envision Racing to Jaguar TCS Racing, partnering Mitch Evans. Sam Bird joined McLaren as René Rast's replacement. Robin Frijns returned to Envision Racing in Cassidy's place. Nyck de Vries returned to Formula E after his Formula One stint ended, joining Mahindra Racing alongside Edoardo Mortara. André Lotterer left Andretti and Formula E entirely after six seasons, replaced by Norman Nato. Jehan Daruvala joined Maserati MSG Racing, replacing the departing Mortara. Lucas di Grassi reunited with ABT CUPRA after his contract with the team had lapsed, replacing Robin Frijns. Oliver Rowland rejoined Nissan, with Norman Nato departing to Andretti.
A battery fire during pre-season testing at Valencia — caused by a faulty unit from battery supplier Williams Advanced Engineering — heavily disrupted testing and damaged the Mahindra cars parked in the adjacent garage. Nyck de Vries could not participate in the remainder of the test.
Sam Bird sustained a wrist injury in the opening practice session of the Monaco ePrix and was replaced by reserve driver Taylor Barnard, who at that point became the youngest driver to start a Formula E race. Bird also missed the Berlin double-header, where several other drivers — including both Envision drivers and de Vries — were absent due to a clash with the FIA World Endurance Championship's 6 Hours of Spa-Francorchamps. Nissan reserve driver Caio Collet made his Formula E debut at Portland after Oliver Rowland fell ill.
Jean-Éric Vergne set a new record for the most career pole positions in Formula E history at the second Portland race, surpassing the mark set by Sébastien Buemi the previous season. Porsche's da Costa won three consecutive ePrix at the close of the Portland double-header and the first London race to mount an outside title challenge, though ultimately fell short of the championship.