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McLaren gets latest Mercedes F1 engine two races after works team
Both McLaren drivers will get the latest specification of Mercedes Formula 1 engine at this weekend's Belgian Grand Prix, two rounds after it debuted aboard the factory Mercedes cars.
Kimi Antonelli and George Russell received a new specification of Mercedes power unit in Austria, which featured a number of reliability improvements. Its other customers Alpine and Williams ran the new version at Silverstone one week later.
McLaren did not swap to it at the Red Bull Ring or Silverstone because it still had mileage to use on its existing power units, having already cycled through many components because of reliability issues in 2026 so far – including the two distinct battery issues that prevented Lando Norris and Oscar Piastri from starting the Chinese GP in March.
McLaren to debut Mercedes power unit upgrade at Spa
Both Lando Norris and Oscar Piastri will use the revised specification at Spa-Francorchamps, which was developed as a reliability upgrade following a series of failures earlier in the season.
George Russell and Kimi Antonelli debuted the engine in the factory Mercedes cars in Austria before Alpine and Williams adopted it at Silverstone, leaving McLaren as the final Mercedes-powered customer to make the switch.
McLaren’s delay was not due to a lack of access to the new engine, with chief executive Zak Brown explaining before the British Grand Prix that the team still had usable mileage remaining on its existing pool of power units.
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'Be grown-up': Guenther Steiner's brutal message as McLaren told to stop blaming Mercedes
Lando Norris jumps from his McLaren following a stoppage on track during FP2 in Monaco.
Guenther Steiner has told McLaren that it is time to be a “grown-up” and build its own Formula 1 engine, rather than point a finger at its engine supplier when things don’t go to plan.
Reigning world champion McLaren has been outclassed by the Mercedes F1 team at the start of the new regulations and trails the Brackley squad by 179 points to 333.
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Both the McLaren and Mercedes receive their power units from Mercedes High-Performance Powertrains [HPP].
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