Mercedes Formula 1 team principal Toto Wolff has dismissed rivals' concerns over his team's 2026 power unit, telling them to 'get your shit together' and stop seeking distractions. The controversy centers on the interpretation of engine compression ratio rules, with manufacturers like Ferrari, Honda, and Audi questioning potential loopholes. Wolff insists Mercedes' setup is fully legal and compliant with FIA regulations.
Mercedes team principal Toto Wolff expressed frustration with rival power unit manufacturers during the launch of the team's 2026 challenger, the W17. Addressing complaints about Mercedes' approach to the new engine regulations, Wolff stated, "I just don't understand that some teams concentrate more on the others and keep arguing a case that is very clear and transparent." He emphasized that communication with the FIA has been positive, covering not only the compression ratio but other aspects as well.
The 2026 power unit rules reduce the compression ratio to 16:1 from 18:1 in previous years. This ratio is measured at ambient temperatures when the engine is not running, without accounting for material expansion under operating heat. Rivals, including Ferrari, Honda, and Audi, suspect Mercedes and Red Bull Powertrains may achieve a higher effective ratio—closer to 18:1—while passing static tests. Audi technical director James Key highlighted the need for a level playing field, saying, "It's new regs. You've got to have a level playing field. If someone came up with a clever diffuser and you said it's not the right thing to do, no one else can have it, but you can have it for the rest of the year. It doesn't make sense. We'd never accept that."
Wolff countered that the power unit is legal and aligns with standard procedures used in motors beyond Formula 1. "The power unit corresponds to how the regulations are written. The power unit corresponds to how the checks are being done," he added. He criticized rivals for "doing secret meetings and sending secret letters and keep trying to invent ways of testing that just don't exist," suggesting some may be creating excuses before the season starts.
The FIA aims to resolve the issue before the Australian Grand Prix on March 6-8, 2026. Single-seater director Nikolas Tombazis noted, "We are very keen to avoid such controversies and to make sure that when people go racing, they understand the rules in exactly the same way." Ongoing discussions may involve the F1 Power Unit Advisory Committee and F1 Commission. Mercedes, fresh from a strong Barcelona shakedown where it completed 500 laps, remains confident and focused on its development.