Antonio Felix da Costa and Daniel Abt have lost their top-ten finishes in Saturday’s Monaco E-Prix to post-race penalties, while Jean-Eric Vergne’s lead in the championship standings has closed to just one point.
Da Costa was disqualified post-race after initially finishing sixth in his BMW iFE.18, after it was found he exceeded the maximum of 200 kW.
An official bulletin revealed that “the maximum total power going out of the RESS recorded 228 kW on laps 50 and 51”.
The BMW i Andretti Motorsport driver had contact with Mitch Evans’ Jaguar, forcing his hand to mode switch, causing the power to spike.
“You see it on the data as clear as day,” explained BMW i Andretti team principal Roger Griffiths.
“There is a rapid change in the steering trace and in the same incident you see the switch position go and by the time we realized what had happened he had gone a fair bit down the road and was placed under investigation.”
Abt, meanwhile, was given a drive-through penalty converted to a 33-second post-race penalty for causing a collision with Oliver Turvey.
The Audi Sport ABT Schaeffler driver finished eighth on track but is now classified 15th in the final standings.
The incident ended Turvey’s race in the early stages, while Abt suffered damage to the front section of his Audi e-tron FE05.
The two penalties moved Andre Lotterer from ninth to seventh in the final classification, giving him six points, enough to solidify his second position in the standings.
Lotterer heads to his home race in Berlin with 86 points, just one fewer than Monaco winner Jean-Eric Vergne, putting DS Techeetah firmly in the lead with four races remaining.
Paris winner Robin Frijns is third on 81, ahead of da Costa on 70 points.
DS Techeetah now has 173 points in total, increasing its lead of the teams standings over Envision Virgin Racing, which remains on 135 after neither of its drivers managed to score points this weekend.
Sam Smith contributed to this report.
RESULTS: Monaco E-Prix (Final)