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February 1, 2026 By  Formula 1, News

Piastri: McLaren finding ‘some limitations’ of Mercedes engine

The challenge for customer teams

One of the most discussed teams during the winter break has been Aston Martin. Perhaps the biggest reason for this is Adrian Newey’s incorporation into the team.

Newey has overseen an ambitious AMR26, which features a variety of distinct and ambitious characteristics. Even when working with Renault-powered Red Bull cars the 67-year-old was renowned for audacious designs.

However, Aston’s exclusive engine deal with Honda means they can make very specific requests. This means Newey’s technical team have a power unit that better accommodates certain aerodynamic and mechanical choices.

Of course, this also comes with immense risk, If the Honda engine is not up to scratch, it will be a long road for the Japanese manufacturer to close the gap – whilst also giving the AMR26 more work to do from an aerodynamic perspective.

The opposite is true for McLaren, As a Mercedes customer team, the benefit from the security of receiving power units from the most reliable supplier in the sport.

In a worst-case scenario, Mercedes might be surprised by another manufacturer and fail to produce the best engine. At McLaren, they will be hoping the German squad meets expectations and set the standard for powertrains.

For McLaren, this takes away the uncertainty that Aston Martin (or Red Bull’s engine department) must overcome.

Still, Piastri’s comments underline the fundamental weakness this creates. At a fundamental level, Stella’s personnel have to react and adapt to the engine provided to them.

This is why McLaren’s relentless development from mid-2023 to 2025 (in stark contrast to Mercedes) was so impressive. It is now up to the engineers to Woking to replicate similar success in 2026.

About Jaden Diaz-Ndisang

Jaden is a Sports Journalist and Writer, with over three years experience in covering Formula 1 and Motorsports.