Abt wins home Berlin Formula E race in Audi one-two

BERLIN (Reuters) - German driver Daniel Abt won his home Berlin round of the Formula E championship in an Audi one-two on Saturday while Jean-Eric Vergne finished third to stretch his overall lead to 40 points.

Frenchman Vergne, who races for the Chinese-owned Techeetah team, now has 162 points to 122 for DS Virgin Racing's British driver Sam Bird, who finished seventh after 45 laps of the circuit at the city's old Tempelhof airport.

Abt, who started on pole position and set the fastest lap, beat Brazilian team mate and reigning champion Lucas di Grassi across the line by 6.758 seconds for his second victory in the all-electric series.

Audi were only the second Formula E team to score a one-two finish.

"An Audi one-two -- our best over result -- and a home win for me, a super result," Abt said.

There are three races remaining this season, with the next round in Zurich, Switzerland, on June 10 before the final two in New York in July.

Germany's now-retired 2016 Formula One champion Nico Rosberg earlier returned to the track to drive several laps in the Gen2 Formula E car that will debut later this year when the new season starts.

(Reporting by Alan Baldwin, editing by Ed Osmond)