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Toto Wolff · Australian Grand Prix paddock, Melbourne 2026

Buxton says Wolff thinks Mercedes’ update may have cost four or five tenths

Archive photograph: Toto Wolff · Australian Grand Prix paddock, Melbourne 2026 · 2026-03-07Archive photo · 2026-03-07 · Yu Chu Chin · CC BY-SA 4.0

Will Buxton said Toto Wolff thought Mercedes’ Sepang update may have cost the team around four or five tenths. Mercedes plans to evaluate its latest and previous specifications in Singapore.

Mercedes’ major update did not bring the performance boost it wanted at Sepang. Will Buxton said on the *Up To Speed* podcast that Toto Wolff thought the package may instead have cost the team around four or five tenths.

The changes were aimed at improving medium-to-high-speed downforce. Buxton framed the cause as an open question: had the update failed, or had Malaysia-specific circumstances kept Mercedes from getting what it wanted from it?

Mercedes said on 5 October that it had identified areas for further investigation and needed more evidence before drawing firm conclusions. Antonelli said Sepang’s tarmac and high temperatures made it “a little bit of an outlier”; he hoped Mercedes would understand the package better and extract more of its potential in Singapore.

Antonelli said Russell would return to the previous package while he committed to the new one for the whole weekend. Mercedes said it would evaluate both versions across the weekend to help decide which direction to take.

Sources 04
  1. SOURCEWill Buxton raises alarm over Mercedes F1 upgrades ahead of Singapore GPMotorsport.com F1
  2. PRIMARY SOURCEMercedes will 'find an answer' to unlocking upgrades – AntonelliFormula 1
  3. PRIMARY SOURCESingapore Will Be an Important Test – Toto’s Singapore GP PreviewMercedes F1 · Team statement; interested source
  4. PRIMARY SOURCEWhy didn't Mercedes' upgrades provide a boost in Malaysia?Formula 1