LONDON, July 4 — Sebastien Buemi clinched the second Formula E Championship yesterday despite being run off the track on the London ePrix season finale by title rival Lucas di Grassi.

Frenchman Nicolas Prost, Buemi's Renault e.dams team-mate, won the race after the opening-lap drama when Brazilian di Grassi sent himself and Buemi into the barriers, with both cars suffering bad damage.

Both resumed, before Buemi — who started from pole to erase di Grassi's championship lead — pitted to change car.

The Swiss Buemi went on to sign off on the fastest lap of the race — in the process grabbing two bonus points — enough to pip Audi Sport's di Grassi to the title.

Race organisers at the leafy Battersea Park launched an investigation into di Grassi's antics.

Prost's race win earned him third, behind di Grassi, in the drivers' championship and ensured Renault captured the team title. — AFP