Vergne was unchallenged for the final third of the race and took his third victory of the season after his teammate André Lotterer battled Bird and di Grassi.
The consequence of the race extended Vergne's Drivers' Championship lead over Bird to 31 points and Felix Rosenqvist kept third despite placing eighth.
The 2018 Paris ePrix was confirmed as part of Formula E's 2017–18 schedule in September 2017 by the FIA World Motor Sport Council.
[7][8] It was switched from May to April because organisers wanted less traffic in the area owing to the 2017 race being held outside the French school holidays.
[11] He spoke of his team's belief they were closer than they had been in the title contest and aimed to capitalise on their current situation, adding that "I won last time out so I'm feeling good.
"[13] Lucas di Grassi (Audi), the 2016 Paris ePrix winner, was stimulated to keep getting podium finishes and took a plethora of momentum from Rome, adding that "Now we need to perfectly nail everything down.
Having been in one of the NIO cars since the season-opening Hong Kong ePrix double header, Luca Filippi was dropped for the race and replaced by the team's reserve and simulation driver Ma Qinghua.
The change was necessitated following Filippi's poor performances over the season compared to teammate Oliver Turvey and the lack of significant results and internal pressure was applied to allow a Chinese driver to race once during the campaign.
[18] An untimed half hour shakedown session was held late Friday afternoon to allow teams to check the reliability of their cars and electronic systems.
[18][19] Bird set the fastest lap late in the first practice session at 1 minute, 1.698 seconds, followed by di Grassi, Abt, Mitch Evans (Jaguar), Vergne, Alex Lynn (Virgin), José María López (Dragon), António Félix da Costa (Andretti), Jérôme d'Ambrosio (Dragon) and André Lotterer (Techeetah).
[20] Two red flags were necessitated in a session where several drivers went off the track:[21] Nelson Piquet Jr. (Jaguar) lost control of his car heading onto the start/finish straight, and deranged his front-right suspension by striking the turn 14 barrier 15 minutes in.
[21][24] The second stoppage came with 15 minutes left when Rosenqvist struck the kerb at turn 12, and lost control of his vehicle's rear by going airborne.
[1] At the end of the group stages, Vergne, Félix da Costa, Engel, Bird and Lotterer's lap times progressed them to super pole.
[30][33] In his second super pole appearance,[30] Engel also had his best career qualifying effort in fourth after losing momentum in the final sector.
[29][35] Fifth-placed Félix da Costa locked his tyres and ran wide at the exit of the third corner to not be in contention for pole position.
[35] Mortara incurred a three-place grid penalty for exceeding the 50 km/h (31 mph) speed limit under red flag conditions in the second practice session.
[35] The rest of the grid lined up after penalties as di Grassi, d'Ambrosio, Buemi, Turvey, López, Rosenqvist, Heidfeld, Prost, Abt, Lynn, Blomqvist, Ma, Piquet, Mortara and Evans.
[37] When the race began before a crowd of 48,000 at 16:03 Central European Summer Time (UTC+02:00),[9][38] Vergne maintained the lead driving into the opening corner.
[40][42][44] The consequence of Ma's stationary car and the Evans, Blomqvist and Prost incident led the race director to activate the full course yellow procedure to allow marshals to clear debris.
[45] At the front, Vergne, Bird and Lotterer opened up a small gap over Engel in fourth who was pressured by di Grassi and Buemi who conserved electrical energy.
[44] Bird had slightly more usable electrical energy than race leader Vergne, allowing him to shorten the latter's advantage and replicate a duel from 2016 at the same track.
[39] Rosenqvist made a prior pit stop and was being lapped by the top two but did not yield to di Grassi, allowing Buemi to close up but could not overtake him.
[42] On lap 41, a short yellow flag phase was prompted when López hit Mortara at turn ten and the latter drifted into a barrier but reversed to continue driving.
[37][41] Lotterer and di Grassi drew closer to race leader Vergne as they distanced fourth-placed Bird in the closing laps.
[49] Unchallenged in the final third of the race, Vergne extended his lead to almost five seconds and slowed across the line with a small amount of electrical energy for his third victory of the season.
[53] Second-placed di Grassi spoke of his happiness at another podium and maintaining his record of scoring points after repairs were made to his car to improve its reliability, "I had another good run today.
"[54] Bird complimented Vergne on the way he ran the race but stated his feeling he was sometimes being put into Lotterer's path, "If he could use him, I'm sure he would've liked to have used him to create a buffer as he is fighting me for the title currently.
"[56] Di Grassi said he saw no logic of Lotterer impeding him once his energy had been depleted and warned that such manoeuvres could become common in Formula E.[57] He agreed with Bird's view and wanted the enforcement of improved competitor etiquette and urged the series' governing body, the Fédération Internationale de l'Automobile, to impose harsher penalties on those deemed to have inadequate driving standards.
He renewed criticism of Formula E's decision to drop the minimum pit stop time, suggesting the new regulation mandated other drivers to risk too much in shortening the amount of time spent in the pit lane and claimed those running in the top ten refitted their seat belts after the race, "It caused us to get the seatbelts loose at one point when I was adjusting them during the run.
Audi overtook Mahindra for third position, while Jaguar scored no points but retained fifth place with four races left in the season.