McLaren dismisses Mercedes theory after MCL40 upgrade shock in Hungary

McLaren defied its own expectations at the Hungarian Grand Prix, with Lando Norris scoring victory and Oscar Piastri running strongly before a DNF thwarted a potential one-two. Team principal Andrea Stella insists the sudden surge in pace came entirely from the team's latest MCL40 upgrade package, directly rejecting Mercedes' theory that favorable driver form played an equal part.

Why it matters:

The clash of interpretations underscores the razor-thin margins defining the 2026 title fight. Mercedes deputy technical director Simone Resta suggested Norris's performance stemmed partly from finding the perfect setup and tyre management window, pointing to variable gaps between the McLaren drivers this season. Stella's firm rebuttal signals that McLaren believes it has fundamentally corrected course after analyzing rival concepts, a development that could reshape the remaining championship battle.

The details:

• The hardware: Budapest updates included a revised floor body, new rear wing endplate, and refreshed rear corner winglets. Stella stated the lap time gain can be "entirely ascribed" to these parts, which introduced a "slightly different concept" after the team studied faster cars.
• Mercedes' view: Resta argued the update alone couldn't explain the result, noting McLaren's driver-to-driver variance and suggesting Budapest was simply a weekend where everything clicked for Norris.
• The logistics: Some parts arrived at the track Friday night and were fitted to Piastri's car Saturday morning, forcing a sprint across aero, design, manufacturing, and logistics departments.

What's next:

Despite the Budapest triumph, McLaren remains third in the Constructors' standings, trailing second-placed Ferrari by 87 points and leaders Mercedes by a further 72. Stella warned that claiming consistent victories will require relentless development, with top teams expected to find up to half a second over the final 11 races. McLaren may be back in the upgrade race, but Hungary was merely the opening lap of a much longer fight.