Buenos Aires ePrix – Jose Maria Lopez was fastest in first practice for his home race in Argentina.
The World Touring Car Champion set a lap time of 1:09.431 at full power of 200kW.
The drama of the session came at the expense of Antonio Felix da Costa, who crashed at Turn 6 after losing the back end of his Andretti on the way into the left-hander, bringing out the red flag.
When the Portuguese racer got in his second car, he ground to a halt on the exit of Turn 5 and could not restart his car. A further red flag was required, with the session ultimately not being restarted with only five minutes left in the session.
Mitch Evans was the only driver other than Lopez to put in a full power lap. He was seven tenths of a second off the pace in third, with Jean-Eric Vergne in second but on the race power output of 170kW.
Sebastien Buemi was fourth ahead of Sam Bird who was on a 200kW lap when the red flag came out. He complained on team radio that he had not been told da Costa was still stranded on track, meaning the yellow flags were still out when he started his lap.
Marrakech polesitter Felix Rosenqvist flirted with the top spot on the timesheets but finished the session in sixth ahead of Nico Prost and team mate Nick Heidfeld.
Lucas di Grassi and Oliver Turvey completed the top ten, with Nelson Piquet close behind his British team mate in eleventh.
Loic Duval was the top Dragon Racing driver in twelfth. Team mate Jerome D’Ambrosio was on the back foot with his longer runs as he had no beeps to tell him when to lift and coast, having to manage his energy manually. He finished the session sixteenth.
Daniel Abt was unable to put in a clean lap in the busy session so was just eighteenth in the standings, ahead only of Ma Qing Hua and Maro Engel.