For any car manufacturer, entering Formula One comes with a steep learning curve. The engineering involved operates at a level beyond the comprehension of even an experienced engineer, let alone a newcomer. F1 engine technology constantly pushes the limits of what’s known and possible — and according to insider rumours, Audi F1 is facing the same headwinds as any new entrant in the fiercely competitive world of Formula One.

Audi’s long-awaited Formula 1 debut in 2026 may start on the back foot, with reports claiming its new engine could be up to 31 bhp down on Mercedes’ power unit. The German marque will officially rebrand the Sauber team next season after completing its full takeover earlier this year, joining Mercedes, Ferrari, Honda and Red Bull Powertrains-Ford as one of five engine suppliers on the grid.

The 2026 regulations mark a new era for F1 — introducing 50 percent hybridisation, sustainable fuels, and active aerodynamics, with major changes to both chassis and engine rules.

Rumours suggest Mercedes is already well ahead in development, echoing its domination after the 2014 hybrid revolution that delivered eight consecutive constructors’ titles.

According to media rumours, Mercedes’ new power unit has reportedly reached 420 kilowatts (571 bhp) — leaving Audi trailing by roughly 30 bhp as it prepares to enter the world’s most competitive motorsport arena.