Buemi leads practice, Vergne in doubt

The Renault e.dams driver produced a 1m08.771s in the second session to lead his main title rival Lucas di Grassi by 0.539 seconds.

Buemi's team-mate Nico Prost was third fastest in practice two, just one-thousandth of a second slower than the Abt Shaeffler FE01 ahead.

Sam Bird gave DS Virgin Racing a boost by topping the opening session and backing up that pace with the fourth best time later on.

He shaded Antonio Felix da Costa, who was 0.7s slower than Buemi's benchmark in the season-one specification Team Aguri-run Spark SRT_01E.

Andretti Autosport's Robin Frijns stopped on track approaching Turn 3 in both sessions, while team-mate Simona de Silvestro broke the left-rear of her car by hitting the wall as she exited the pitlane in first practice.

Jean-Eric Vergne's likelihood of participating in the event is unclear after he was diagnosed with food poisoning.

The DS Virgin driver missed opening practice, while the team explored the possibility of replacing him with Citroen's double World Touring Car champion Jose Maria Lopez.

The Argentinian is attending his home Formula E event as a guest of DS, Citroen's sister brand.

Vergne recovered enough to declare he would return for the second session, which ruled out any chance of a shock Lopez debut, but did not complete any laps.