Red Bull agrees Mercedes has 'most powerful' power unit after Spa

Toto Wolff's claim that Mercedes holds the "most powerful power unit" on the grid has drawn unexpected agreement from Red Bull, with racing director Laurent Mekies conceding the Silver Arrows enjoy a clear straight-line advantage. The admission reignites debate over 2026's true engine hierarchy as the second Additional Development and Upgrade Opportunities (ADUO) window nears its close in Budapest.

Why it matters:

Mercedes leads the constructors' standings with 358 points, 73 clear of Ferrari and 207 ahead of Red Bull. With engine performance directly shaping the title fight, Wolff and Mekies agreeing on Mercedes' power advantage raises serious questions about whether Red Bull's celebrated ICE benchmark actually wins races.

The details:

• The ADUO framework allocates extra upgrades based on ICE rankings. Initial data placed Red Bull's ICE as the benchmark, with Mercedes second and Ferrari, Audi, and Honda trailing.
• Mercedes received one upgrade token while Ferrari, Audi, and Honda got two. Yet Mercedes has still won eight races this season, including Kimi Antonelli's Spa victory.
• Speaking after the Belgian Grand Prix, Mekies said Wolff is "right" and that Mercedes holds a "sizeable advantage on the straight most weekends," amplified at Spa by track sensitivity.
• Max Verstappen finished third at Spa, 11 seconds behind Antonelli, underscoring the works Mercedes package's clear edge.

What's next:

The second ADUO assessment closes in Budapest, potentially altering development allowances before the summer break. If Mercedes' straight-line dominance continues to outpace its official ICE ranking, Red Bull must find a way to close the real-world gap fast or watch the championship drift further out of reach.