Mercedes warns against FIA engine upgrade decision altering competitive order

Mercedes team principal Toto Wolff has expressed strong opposition to the FIA's upcoming decision on engine upgrades for 2026, stating he would be "surprised" and "disappointed" if it interferes with the current competitive order. The governing body is set to rule on which manufacturers qualify for Additional Design and Upgrade Opportunities (ADUO), a mechanism Ferrari openly expects to use to close a perceived power deficit to Mercedes.

Why it matters:

The FIA's imminent ruling has major implications for the 2026 championship fight. Granting performance-based upgrades to a top team like Ferrari could directly shift the competitive balance at the front, challenging the intended purpose of the ADUO system as a catch-up tool for genuinely struggling manufacturers, not a leapfrog mechanism for title contenders.

The details:

• Wolff's stance is based on Mercedes' internal analysis, which suggests only Honda is significantly behind and truly needs assistance, while the other top engines are "pretty much in the same ballpark."
• Ferrari team principal Fred Vasseur has been vocal, stating the ADUO is "an opportunity for us to close the gap," which he estimates is as much as 0.8 seconds per lap in Mercedes' favor.
• Rules and Stakes: The FIA will assess power unit performance after the Miami Grand Prix.
  • Manufacturers deemed 2% adrift of the benchmark get one upgrade in 2026 and another in 2027.
  • Those 4% or more behind get two upgrades in each season.
  • The leading manufacturer is frozen from upgrades, risking being caught if rivals improve.
• Gamesmanship Concerns: Rivals question if Ferrari's power deficit is genuine or a result of strategic design choices (like a small turbo and exhaust wing). Wolff emphasized the FIA must act with "absolute precision and clarity" to avoid rewarding tactical underperformance.

What's next:

All eyes are on the FIA's post-Miami decision, which will shape development paths for the remainder of 2026 and into 2027.

• If Ferrari or another front-runner is granted upgrades, it could ignite a fierce development war and potentially destabilize the early-season hierarchy.
• Wolff asserts Mercedes is not "worried" but is closely monitoring the situation, trusting the FIA to "protect the integrity of the sport" and prevent the ADUO from becoming a leapfrog tool.
• The ruling will test the robustness of the new regulations and the governing body's ability to police a high-stakes process where manufacturers have every incentive to appear weaker than they are.