Mercedes reveals power unit strategy for McLaren, Williams and Alpine ahead of Melbourne. Mercedes has implemented a staged power unit strategy for its F1 customers.

Mercedes’ customer teams in Bahrain testing received less aggressive, more reliable engine specifications, and this approach will continue in Australia. The aim is to provide “safe” power units to clients, allowing them to cover mileage without concerns, while the factory team runs a more aggressive version in preparation for the final homologation scheduled for March 1. According to reports, Mercedes adopted a “branched” strategy for its power units during the Bahrain tests.

The customer teams – McLaren, Williams and Alpine – were provided with power units different from those of the official Mercedes team, which focused on the latest performance experiments. Unsurprisingly, the factory Mercedes team experienced some reliability-related issues, particularly involving Andrea Kimi Antonelli.

McLaren, Williams and Alpine will therefore benefit from a performance step ahead of the season opener in Melbourne, as they will receive the final, homologated version of the Mercedes power unit for the start of the season. McLaren Team Principal Andrea Stella praised the strategy implemented by Mercedes:

“I have to say that the engine we had during this test performed extremely reliably and gave us the opportunity to complete all the tests we wanted, as well as learn more about the interaction between the power unit, chassis, and driver,” Stella told racingnews365.com. “It was certainly an intense and challenging program for the engine manufacturers, not just for the teams from a chassis perspective, but what is important is that the right specifications are available for the first race.”

This approach highlights Mercedes’ careful management of its customer power units, ensuring reliability and performance while allowing the factory team to explore more aggressive setups ahead of the 2026 season opener.