The FIA’s 2026 technical package guarantees that customer outfits receive the same engine specification as the factory side, but the new power unit’s complexity shifts the advantage to know‑how. In practice, McLaren and its partner Mercedes find that the real difference lies in how the team extracts performance, not inatuur

Historically, works teams have benefited from insider expertise, yet customer squads have won titles—McLaren in the last two seasons, Brawn in 2009, and Red Bull alongside Renault during its dominant years. The 2026 era amplifies this pattern, making software sophistication and energy‑management systems decisive.

At the British Grand Prix, Andrea Stella highlighted a 0.3‑second shortfall on the straights and a larger loss in corners, blaming incomplete exploitation of the hybrid power unit. He said teams must keep dialogue open with Mercedes’s high‑performance partnership to unlock the unit’s full capability.

The new system re‑emphasises that equal hardware does not equal performance; customer teams must double down on software and data analytics. As the season unfolds, the gap between factory and customer outfits will widen unless the latter invest aggressively.