FIA announces updated 2026 regulations, including new engine testing after Mercedes PU scrutiny, plus a series of rule tweaks ahead of the season.

In December, it emerged that Mercedes had found a possible loophole in the rules that could lead to a performance advantage.

The roar of Formula 1 engines fired back to life this week as the teams prepare for the biggest rule change in the history of the world’s number one motorsport category. The 2026 F1 season, which ...