Attack Mode was conceived as a tool to encourage overtaking and strategic variety in Formula E races. It arrived alongside the Gen2 car, which eliminated the mid-race car-swap format of the first four seasons. The feature was designed to be variable in both its parameters and timing of activation, with the FIA announcing the specific rules for each event only shortly before it took place. This short-notice approach reduced the time available for teams to compute optimal strategies and increased the element of uncertainty during races.
The defining physical characteristic of Attack Mode is its activation zone, a marked section of the circuit that sits off the normal racing line. To earn the power boost, a driver must guide the car through this zone rather than following the shortest or fastest path through the corner. The deliberate inefficiency of this action means the driver sacrifices time in the immediate moment and is typically slower through that section than competitors who are not activating. The strategic question centres on when to take this penalty and how to maximise the subsequent power advantage.
At launch in Season 5, Attack Mode provided an additional 25 kW above standard race power output. This was increased to 35 kW for Seasons 6 and 7. The duration of each activation and the number of times a driver had to pass through the zone in a given race were determined by the FIA on a race-by-race basis, giving the series flexibility to adjust the format depending on circuit characteristics.
All allocated Attack Mode activations must be used before the end of the race. However, if a driver activates a final boost mode in the penultimate lap and the boost period is still running at the chequered flag, no penalty is applied. Attack Mode cannot be activated during Full Course Yellow or Safety Car periods.
During Season 8 — the final year of the Gen2 car era — Attack Mode power was set at 250 kW, the same level as the FanBoost that was also available that season. This aligned the two boost mechanisms in terms of raw power output, though they differed entirely in how they were earned.
With the introduction of the Gen3 car for Season 9 in 2022-23, the Attack Mode format was restructured. Rather than the fluctuating number of activations and variable individual durations that had characterised the Gen2 era, drivers were allocated a fixed combined total of four minutes of Attack Mode per race, to be deployed in exactly two activation periods. At the start of the race, each driver chose a deployment strategy from three options: two two-minute periods, a one-minute period followed by a three-minute period, or a three-minute period followed by a one-minute period.
From the 2023 Jakarta ePrix onwards, the combined allocation was extended to eight minutes, deployable as a two-minute and a six-minute block or as two four-minute blocks.
For the Gen4 car introduced in Season 12, Attack Mode power is set at 600 kW, matching the peak qualifying output. The Gen4 car overall offers substantially higher performance than its predecessor, with a race power output of 450 kW and full-time all-wheel drive, making the absolute power delta of Attack Mode larger than in previous generations.
Attack Mode has become a central element of Formula E race strategy. The timing of activations relative to competitors, the decision of whether to activate defensively to cover a rival or offensively to pass one, and the management of remaining activation time in the closing stages of a race regularly determine race outcomes. The FIA's practice of varying activation rules per event has added further layers of uncertainty that teams and drivers must account for during the race itself.