George Russell will take a power-unit penalty at the Singapore Grand Prix without receiving Mercedes’ new ADUO 1 engine specification. Toto Wolff has confirmed that the British driver requires a new power unit at Marina Bay, but Mercedes has been unable to bring forward the debut of its updated turbocharger in time for the weekend.
The situation leaves George Russell facing an extremely difficult Sunday race from the back of the grid while Mercedes simultaneously works to understand the problems that emerged at Sepang with its latest W17 upgrade package.
Mercedes splits W17 upgrade programme in Singapore
The Brackley team must establish how much of its step backwards in Malaysia was caused by the specific characteristics of Sepang and how much was linked to the new developments introduced on the car.
Mercedes will therefore split its technical programme in Singapore. Andrea Kimi Antonelli will run the latest upgrade package, while George Russell will return to the previous specification.
The comparison should provide valuable data to the technical department as Mercedes works to understand the correct development direction for the W17. It follows a period in which Toto Wolff has already acknowledged questions around the team’s W17 development programme and upgrade potential.
Mercedes tried to bring ADUO 1 engine forward to Singapore
Mercedes had been working to optimise the rotation of George Russell’s power units and avoid exposing him to an inconvenient second grid penalty later in the season.
Engineers at Brixworth therefore explored every possibility of bringing forward the debut of the ADUO-developed power unit, including its updated turbocharger, from the United States Grand Prix in Austin to Singapore.
The new specification had originally been scheduled to arrive in Austin, where Andrea Kimi Antonelli is still expected to replace one or potentially more power-unit components.
Mercedes had been making a significant effort to accelerate the programme by one race so that George Russell could combine his unavoidable Singapore penalty with the introduction of the improved specification.
That plan has not been completed in time.
George Russell will not receive Mercedes’ updated turbo in Singapore
George Russell will therefore race at Marina Bay without the upgraded turbocharger. Mercedes has pursued development of this major power-unit component in a similar way to Ferrari, Audi and Honda.
Compared with elements such as the internal combustion engine, the turbo is less expensive to develop but can still contribute to gains in outright power and, importantly, the driveability of the car.
The upcoming Mercedes specification is intended in particular to improve torque delivery at low engine speeds. The first version of the component had a noticeable gap in that area, and the revised turbo is designed to provide a fuller and more consistent torque curve.
Mercedes ADUO 1 upgrade remains set for upcoming races
The updated specification is now expected to appear during the next races rather than at Marina Bay. That means George Russell will serve his Singapore penalty without gaining the immediate performance benefit Mercedes had hoped to combine with the power-unit change.
For the Mercedes Formula 1 team, the weekend will consequently have two important technical objectives: managing Russell’s recovery from the back of the grid and comparing the old and new W17 aerodynamic packages to better understand the disappointing performance seen in Malaysia.
The unusual format of the 2026 Singapore Grand Prix Sprint weekend will make that work even more demanding, with limited practice time before the competitive sessions begin.
Leave a Reply