Mercedes has committed to a fascinating split-spec strategy for the Singapore Grand Prix, running two entirely different aero configurations across its W17s for this weekend. Kimi Antonelli will push ahead with the upgrade package introduced last week in Sepang, while George Russell rolls back to the previous version to give the squad a direct, side-by-side comparison over all three days of the event.
That split became an absolute certainty for the team after the data from Malaysia left everyone guessing. It was hardly a disaster — Antonelli finished second and Russell was on course for a podium before his late retirement — but the anticipated lap time benefits simply never materialized. Russell actually floated the idea of a back-to-back test even before the Sepang race, and his late retirement conveniently triggered a power unit grid penalty that made rolling back an obvious choice.
"I instigated the conversation prior to the race on Sunday," Russell said on Thursday's media day in Singapore. "So when the failure happened, it was kind of a no-brainer, because we were kind of 50-50 about it pre-race. And I was more in favour to do it, and that was even pre-race. Whereas now it is a total no-brainer."
Despite drawing the short straw of running the older spec, Russell sees a much bigger picture in helping the team draw firm conclusions. He points out that performance fluctuations this season have been wild even with a consistent car, citing a pole position in Baku by eight-tenths followed by being four-tenths off the pace in Budapest. He believes Sepang was an outlier and that Red Bull overperformed relative to a field where Mercedes' pace was not too dissimilar from McLaren and Ferrari.
Meanwhile, Antonelli keeps the Sepang updates and adds a new front wing in Singapore to complete the full upgrade package. The young Italian admits the numbers in Malaysia were strange, blaming the brutal conditions and rough tarmac where track temperatures soared past 60 degrees and corners were literally missing asphalt.
"Of course, the numbers are a different story in Sepang," Antonelli said. "But I think Sepang, it was a bit of an outlier because the tarmac was just so rough... And definitely I feel like this weekend is going to be a bit more representative. Cooler temperatures, the tarmac is in a much better state, and I think it's going to be a very good test, because in Sepang we struggled a lot in low-speed, and here we have a lot of low-speed."
Antonelli is eager to help the team understand the new parts rather than writing off the hard work put into them so early. With two different machines gathering data simultaneously, Mercedes is about to get some answers.
