Formula 1 enters a new engine and chassis rules era in 2026 season

The 2026 Formula 1 season opened under the biggest technical overhaul in years, with new rules covering both the power units and the chassis. Teams had spent much of the previous two years designing cars around the changes.

The new engines keep the V6 turbo format but place far greater emphasis on electrical power, with the combustion engine and the electric side contributing in roughly similar measure. The MGU-H, a complex heat-recovery part, was removed, and the cars run on advanced sustainable fuels. The chassis rules brought smaller, lighter cars and adjustable aerodynamics intended to improve racing. The grid also changed, with new engine manufacturers and a new team entering the championship.

Mercedes, led by team principal Toto Wolff and running drivers George Russell and Kimi Antonelli, was widely regarded as one of the leading teams heading into the new era. The team's engine programme was seen as a key strength, and a rule reset of this scale offered a chance to reshape the competitive order after several seasons in which Mercedes had been unable to match its earlier dominance. That context is why the season's start matters for the later title story.