Monday, March 16, 2026

FIA changes Power Unit Compression check

But will Mercedes have an “Unfair Advantage” until then?

 

Lost in all of the excitement over Formula 1 kicking off its 2026 season Down Under in Bloody Melbourne Mates! For those who have access to Apple TV!

 

Prior to this year’s Australian Grand Prix, the FIA announced its Power Unit regulations would be updated June 1st over the much ballyhooed and controversial “Compression-Gate” saga dogging Formula 1.

 

Prior to the season kickoff via an E Vote, unanimous consent was accepted over a new policy “Policing” the perceived loophole Mercedes Benz, and possibly Red Bull Power Train have extracted regarding the lowered 16:1 compression ratio for 2026. A decrease from the previous 18:1 allowance.

 

Currently, Power Units were only mandated to meet this requirement at ambient temperature, with the theory being that Mercedes had engineered a way to increase compression at higher operating temperature. And thus, perceivably gaining extra horsepower by returning to the higher 18:1 ratio.

 

Starting June 1st, Power Units will be tested at both ambient and a higher operating  temperature, and next year a higher operating temperature will be chosen for inspection purposes. Which hopefully, all of the Power Unit manufacturers will find suitable, and theoretically establish a “level” playing field…

 

Meanwhile, it was somewhat interesting hearing both McLaren and Williams team principals Andrea Stella and James Vowles noting how Mercedes definitely seemed to have not passed on as much working knowledge of the new Power Unit to its customers. And they were struggling to unlock the new PU’s potential.

 

As believe Vowles said it was costing them 0.3 seconds per lap and qualifying was startling to see how far off the pace they were! While I’m certain Alpine was also in the same situation.