Why is Mercedes splitting car specifications at the Singapore Grand Prix

Mercedes will run two different W17 specifications at the Singapore Grand Prix, giving the team a direct comparison between its latest updates and the earlier package across the Sprint weekend.

Malaysia left Mercedes without a clear verdict

Mercedes introduced its latest updates in Malaysia, but the team did not see the expected lap-time benefit. The results were not wholly negative: Antonelli finished second, while Russell had been on course for a podium before retiring late in the race. Still, the team judged that the data had not settled whether the new package was delivering the gains it anticipated. Mercedes’ post-Malaysia concerns are explored in its investigation into the team’s struggles.

Russell had already supported using Singapore for a direct comparison before the Malaysian race. His retirement brought a power-unit grid penalty for this weekend, making the decision easier. He said the penalty created an opportunity to return to the car he had used in Azerbaijan and help establish a firmer answer on the updates. The decision means Russell will roll back the Mercedes package while Antonelli carries the new parts.

Russell also cautioned against drawing conclusions from Malaysia alone. He pointed to substantial variation in Mercedes’ results with a consistent car at other tracks, and said he believed the Sepang performance was specific to that event. He also noted that Red Bull had performed unusually strongly there, while Mercedes’ pace relative to McLaren and Ferrari was not dramatically different.

Antonelli wants to understand the new package

Antonelli said Sepang’s rough surface and high track temperatures made it an unusual test. Singapore, he believes, should provide a more representative assessment: its cooler conditions and abundance of low-speed corners will give Mercedes another setting in which to evaluate the updates.

The Italian is content to continue with the new specification. He said the team had invested heavily in its development and that he wanted to help establish its potential, rather than dismiss it after one inconclusive weekend. With the old package familiar to Mercedes and the new one still under evaluation, the split gives the team a clear comparison as it works to understand the difference between them.