Dan Ticktum took a sensational first Formula E victory in a Jakarta race that was brought alive by a clash between long-time leaders Jake Dennis and Nyck de Vries.

Andretti's polesitter Dennis led the opening portion of the race from De Vries, after the Mahindra driver jumped McLaren's Taylor Barnard to run second at the start, right through to their first attack mode deployment halfway through the 38-lap race on a Jakarta circuit where overtaking was at a premium due to an incredibly dusty outside line.

But the two leaders diverged on attack mode strategy at that point, with Dennis opting to take two minutes to De Vries' four at their first activation.

While that left Dennis with longer to use for his second activation later in the race, it twice left him vulnerable to De Vries along the main straight.

Dennis fended off an initial attack with a robust defence on the run to the first corner, cutting off De Vries' attempts to go for the inside line.

He repeated that tactic again the following lap but De Vries had a better run by this point and was ahead - albeit not fully, as he found out when he moved to the right, with his right-rear corner making contact with the front-left of Dennis's front wing and scattering debris across the track.

We have contact at the front of the pack!