Kimi Antonelli says Mercedes cannot judge its latest W17 upgrade after Sepang, where aged tarmac distorted tyre behaviour and pace, leaving its Bahrain-introduced package’s true impact unclear ahead of Singapore.

Mercedes ran a seven-part aerodynamic suite targeting underfloor load without drag, revising floor edges, the outer perimeter, body floor, sidepods, engine cover, and rear-suspension fairings.

Lap-time traces and driver feedback offered no decisive step. The aged surface increased abrasion and temperature spread, pushing tyres outside ideal windows and obscuring any aerodynamic gain.

Antonelli highlights a recurring pattern on older tracks, referencing Zandvoort as another difficult benchmark. He raised similar concerns after the Azerbaijan GP, stressing tyre-limited days can mask underlying car potential.

That sensitivity narrows Mercedes’ set-up latitude. Tyre warm-up, ride-height range, and aero platform coupling interact tightly, so small surface changes can flip behaviour and erode correlation to simulations.

Rivals showed cleaner reads. Red Bull’s updated floor delivered Max Verstappen pole and victory, reinforcing ongoing discussion around Verstappen’s advantages this season. Ferrari’s diffuser winglets helped Lewis Hamilton start alongside and recover to third.

That contrast suggests Mercedes’ limitation is surface sensitivity rather than an outright concept miss. The ambiguity still delays development calls and risks misallocating windtunnel and manufacturing resources.

Mercedes banked extensive logging at Sepang to cross-check windtunnel and CFD. Antonelli expects Singapore’s fresher surface to give a cleaner read, building on his best finishes earlier this season.

Next steps focus on tyre preparation, ride-height mapping, and rear-suspension aero interaction. Unlocking stable mid-corner load at Marina Bay would validate the package and guide the next iteration.

With the calendar compressing, Mercedes needs a firm direction quickly to challenge Red Bull and Ferrari consistently through the development race.

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Daniel Miller

Daniel Miller reports on Formula 1 Grand Prix weekends with race-day analysis, team-radio highlights, and point-standings updates. He explains power-unit upgrades, aerodynamic developments, and driver rivalries in straightforward, SEO-friendly language for a global F1 audience.