FIA Mandates Restricted Engine Mode for 2026 Monaco Grand Prix

The FIA has mandated a compulsory ‘Rev 1’ engine mode for the 2026 Monaco Grand Prix, limiting electrical boost to curb top speeds on the Monte Carlo street circuit.

F1 active aero system dropped for Monaco

The 2026 technical package adds adjustable front and rear wings that can enter a low-drag ‘straight mode’ on long straights. Monaco’s short straights and frequent braking prevent safe activation, so the FIA excluded straight-mode zones from the circuit map.

F1 active aero system dropped for Monaco

The 2026 power unit can deliver up to 350 kW of electrical boost. Under ‘Rev 1’, power reduction starts at 200 km/h and reaches zero by 300 km/h, whereas the standard ‘Base’ mode only tapers after 290 km/h. Straight-mode activation requires a minimum duration of more than three seconds, a threshold not met on the Monte Carlo layout.

FIA Imposes Mandatory Engine Mode in Monaco Grand Prix to Prevent Dangerous Top Speeds

The FIA said the ‘Rev 1’ restriction is a safety measure to keep cars within the narrow margins of Monaco’s corners. It also noted that straight-mode zones were omitted because the three-second minimum could not be satisfied without adding driver workload or compromising stability. The official F1.com track map confirms the absence of any straight-mode activation zones.

F1 active aero system dropped for Monaco

Power-focused teams such as Mercedes argue that the early power cut-off disadvantages their engine-centric designs, while critics warn that the abrupt reduction could create handling challenges on the circuit’s low-speed corners. The rule is seen as favouring chassis with strong mechanical grip, notably Ferrari.

FIA Imposes Mandatory Engine Mode in Monaco Grand Prix to Prevent Dangerous Top Speeds

With straight-line power neutralised, qualifying will depend on precision and tyre management rather than outright speed, making the grid more unpredictable. Teams with superior low-speed traction, especially Ferrari, are expected to benefit, while Mercedes may struggle to adapt.

FIA Imposes Mandatory Engine Mode in Monaco Grand Prix to Prevent Dangerous Top Speeds

• “? ÚLTIMA HORA ? ? En Mónaco habrá un NUEVO modo de motor OBLIGATORIO para LIMITAR la velocidad máxima ? Esto se debe a la cantidad de energía que podrán utilizar debido a las características del trazado.” — @Nachez98, motorsport commentator (X)

FIA Imposes Mandatory Engine Mode in Monaco Grand Prix to Prevent Dangerous Top Speeds

• “Under standard operating procedures, known as the “Base” mode, maximum electrical deployment only begins tapering off at 290 km/h.” — The Race

FIA Imposes Mandatory Engine Mode in Monaco Grand Prix to Prevent Dangerous Top Speeds

• “Under the new mandate, the electrical power reduction will aggressively begin at just 200 km/h.” — The Race

FIA Imposes Mandatory Engine Mode in Monaco Grand Prix to Prevent Dangerous Top Speeds

The Monaco weekend will test the ‘Rev 1’ restriction in practice, qualifying and the race. The FIA will monitor safety data and driver feedback, leaving open the possibility of adjusting the engine-mode parameters for future street-circuit events.

F1 active aero system dropped for Monaco