Formula 1 is to ban teams from changing engine performance levels over a Grand Prix weekend. The rule will force teams to use a single engine mode throughout a race weekend. By restricting teams to one mode, the FIA will be able to monitor the engines at all times, removing this grey area. Teams have changed engine modes throughout weekends since the 1.6-litre V6 turbo hybrid power-units were introduced in 2014. Now, engines will have to be running at the same performance level at all times a driver is on a flying lap throughout a race weekend. “So five laps of qually mode not being done gives us 25 laps of more performance in the race.

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