Season 3 brought the most extensive calendar revision yet, with eleven changes from the previous year. Hong Kong and Marrakesh entered the calendar for the first time — the latter bringing Formula E to Africa for the first time. Monaco returned after a one-season absence. Berlin moved back to Tempelhof Airport after a one-year experiment with a street layout on Karl-Marx-Allee. New York City held its first motor race since 1896 on the Brooklyn Street Circuit. Montreal hosted the season-ending finale, Formula E's first Canadian event. Venues dropped included Long Beach, Punta del Este, London, Beijing, and Putrajaya — several due to financial disputes, one (London) due to a High Court challenge over the use of Battersea Park.
Two new teams joined: Jaguar returned to top-level motorsport as a works team for the first time since leaving Formula One at the end of the 2004 season, partnering with Williams Grand Prix Engineering. Team Aguri was purchased by China Media Capital and relaunched as Techeetah, running a custom Renault powertrain.
The maximum regeneration power was increased from 100 kW to 150 kW, enabled by an updated Williams Advanced Engineering battery. Battery cell weight rose from 200 kg to 230 kg. The only point available for fastest lap was restricted to a single point, reducing the strategic incentive that had influenced late-race tactics in previous seasons. Michelin introduced a revised 18-inch all-weather tyre offering lower rolling resistance and better energy management. From the Berlin round, teams were required to display driver names and numbers on the car's external bodywork.
Notable newcomers included Felix Rosenqvist, the 2015 FIA Formula 3 European champion, who joined Mahindra alongside Nick Heidfeld. Three-time World Touring Car champion Jose Maria Lopez joined Virgin Racing. Jaguar selected Adam Carroll and Mitch Evans after evaluating four candidates. Jean-Eric Vergne moved from Virgin to the new Techeetah outfit. Mid-season, Esteban Gutierrez — a former Haas F1 driver — joined Techeetah, and Pierre Gasly deputised for Buemi and Lopez in New York when both were required to contest the 6 Hours of Nurburgring.
Sebastien Buemi, the defending champion, led for much of the season and set a personal record of wins. However, missing the New York City double-header due to his Toyota WEC commitments at the Nurburgring proved decisive: Buemi lost 50 potential points during those two rounds and entered the Montreal finale unable to recover ground. Di Grassi, who had accumulated wins and consistent scoring over the season, clinched the championship at the finale. Rookie Rosenqvist was particularly impressive, claiming Mahindra's first Formula E victory at Berlin after Buemi was disqualified from his apparent race win in the first Berlin ePrix for tyre pressure violations, and winning again in the second Berlin race before receiving a post-race penalty that handed Buemi a sixth win.
Renault e.dams' title came despite Buemi's New York absence. The team's cumulative points through Buemi's nine-round dominance and Nico Prost's consistent scoring gave them enough buffer to hold off ABT Schaeffler Audi Sport and Mahindra.
Season 3 marked Formula E's emergence as a genuinely global championship, with the roster of host cities reaching across Europe, Asia, South America, Africa, and North America in a single season. Jaguar's return to top-level racing via Formula E signalled the series' growing appeal to premium automotive brands. The season also produced several controversial moments — Buemi's New York absence, Rosenqvist's Berlin penalty — that demonstrated the compressed drama inherent in the championship's format. Di Grassi's title was the second consecutive non-Renault driver's championship, confirming that the multi-manufacturer powertrain era had genuinely diversified competition.