F1 / NEWS & CONTEXT

Russell plays down one-second suggestion for Mercedes upgrade

George Russell says Mercedes’ latest upgrade is a sizeable step, but rejects the suggestion that it could bring a one-second gain.

GPBeat · Newsroom01 Oct 2026, 21:28 · 2 min

RacingNews365 Nederland reports that Mercedes plans to bring a substantial aerodynamic upgrade for its W17 to Sepang this weekend. Citing information it has obtained, the publication says the changes centre on the floor, sidepods and parts of the wings. The aim is to generate more downforce in corners without losing efficiency on the straights.

The report’s authors, Paolo Filisetti and Stefan Kerk, assess that slower, twistier circuits have suited the W17 less well than faster sections, where they credit its power unit and energy management. Their account describes what Mercedes hopes to improve, rather than a performance gain already seen on track.

The reported parts are due to make their debut this weekend. Only then will it become clear whether they improve the W17’s cornering without compromising its straight-line performance.

Update

A straighter ramp on the W17’s sidepods now angles towards the rear of the car, while the bodywork drops towards kerb height ahead of the rear wheels. The floor has also been reworked around the diffuser throat, altering pressure distribution at its exit, RacingNews365 reports.

The publication estimates that the sidepod and floor changes could produce nearly four per cent more downforce without increasing drag.

RacingNews365 expects the changes to improve the W17’s balance and traction out of slow corners, where it says the car has lacked downforce and traction.

Update

Mercedes driver George Russell has rejected the suggestion that the team’s latest Formula 1 upgrade could be worth as much as one second. RacingNews365 put the figure to him after extrapolating from an earlier wind-tunnel development estimate it attributed to Mercedes technical director James Allison. Russell’s answer was “No”.

In comments reported by RacingNews365 on 1 October, Russell called the package a large individual step because of the long gap since Mercedes’ previous upgrade. Across that period, though, he said it represented a normal pace of development. Its main aim is to add downforce rather than fundamentally change the car, while retaining the low drag he believes has helped Mercedes on the straights.

Russell hopes the changes will bring Mercedes closer to the front at circuits he says have proved difficult for the team over the past six races.

Sources 03

SOURCEMercedes boezemt concurrentie angst in met langverwachte upgradeRacingNews365 Nederland · Source date as found: 2026-09-30
SOURCEMercedes combat W17 weakness with rare F1 upgradeRacingNews365 English · Source date as found: 2026-10-01
SOURCEGeorge Russell responds to extreme theory over Mercedes F1 upgradeRacingNews365 English · Source date as found: 2026-10-01

Source context

RacingNews365 Nederland places the planned upgrade at Sepang but also calls the event the Bahrain Grand Prix.

RacingNews365’s 1 October report names Sepang but uses conflicting labels for the Grand Prix.

RacingNews365 reported Russell’s comments from a media session. The one-second figure was the outlet’s extrapolation from earlier remarks it attributed to James Allison.

Claims and supporting evidence 15

RacingNews365 reports that a substantial aerodynamic upgrade for the Mercedes W17 is due to debut at Sepang during the coming weekend. This is a report of an upcoming change, not confirmation that the parts have run on track.

This source finding must be read within the stated scope and source context. Planned Mercedes W17 aerodynamic upgrade Published 30 September 2026; refers to the coming race weekend. The article does not cite a Mercedes announcement or establish the upgrade's eventual configuration. Its naming of the Grand Prix is inconsistent.

[1]

According to information cited by RacingNews365, the principal changes concern the floor, sidepods and parts of the wings. The reported aim is more downforce, particularly to improve cornering, without sacrificing straight-line efficiency. These are reported plans and aims, not measured gains.

This source finding must be read within the stated scope and source context. Reported components and intended effect Ahead of the coming race weekend, as reported on 30 September 2026. The underlying information is not identified, and the supplied page contains no technical inspection or performance measurement of the new parts.

[1]

The RacingNews365 article, credited to Paolo Filisetti and Stefan Kerk, assesses that slower, twistier circuits have suited the W17 less well, while its power unit and energy management have contributed to strength on faster sections. This is the publication's technical assessment, not an independently established performance comparison.

This source finding must be read within the stated scope and source context. Technical assessment accompanying the report Assessment of the 2026 season through the preceding Baku race, published 30 September 2026. The page supplies no comparative timing data for these assessments.

[1]

RacingNews365 explicitly leaves the upgrade's competitive effect open until the cars run with the new parts; its suggestion that Mercedes could extend its advantage is conditional, not a result.

This source finding must be read within the stated scope and source context. Uncertain competitive effect Before the coming race weekend, as reported on 30 September 2026. No rival reaction or post-upgrade track evidence is provided.

[1]

RacingNews365 reports that Mercedes brought an aerodynamic update to the W17 at Sepang, designed to increase downforce from the car's bodywork. This establishes the reported arrival and purpose of the package, not a measured improvement.

This source finding must be read within the stated scope and source context. Mercedes W17 aerodynamic update 2026-10-01, ahead of the race described on the page One supplied report; the page contains conflicting event-location labels.

[2]

The publication describes this as Mercedes' first significant update since the Montreal round in May. 'Significant' is the publication's characterization, not an independently established inventory of upgrades.

This source finding must be read within the stated scope and source context. Frequency of substantial Mercedes updates May–October 2026 No earlier upgrade records were supplied.

[2]

RacingNews365 identifies a straighter, rearward-angled sidepod ramp and bodywork that drops towards kerb height ahead of the rear wheels.

This source finding must be read within the stated scope and source context. Visible bodywork changes Update reported 2026-10-01 Technical description from the sole supplied publication.

[2]

The same report says the floor was substantially revised around the diffuser throat, changing pressure distribution at the exit.

This source finding must be read within the stated scope and source context. Floor and diffuser changes Update reported 2026-10-01 No separate technical documentation was supplied.

[2]

RacingNews365 says the sidepod and floor package is understood to yield almost four per cent more downforce without an accompanying drag increase. That is an attributed estimate, not a demonstrated track result.

This source finding must be read within the stated scope and source context. Estimated aerodynamic effect Prospective effect as reported 2026-10-01 The article supplies no measured test result or stated basis for the estimate.

[2]

The publication expects the update to improve the W17's balance and traction on exits from slow corners; it does not report that this improvement has occurred.

This source finding must be read within the stated scope and source context. Expected handling effect Expectation reported 2026-10-01 Prediction rather than an observed performance outcome.

[2]

The page describes the venue as Sepang but calls the event the Bahrain Grand Prix in Malaysia; its calendar also labels the 4 October race Bahrain GP. These labels do not resolve the event's official name or venue.

This source finding must be read within the stated scope and source context. Event identification Race listed for 2026-10-04 This is an inconsistency within the only supplied page; no official schedule was supplied.

[2]

Russell rejected the suggestion that the package would deliver a gain on the scale of one second. RacingNews365 derived that possibility from an earlier estimate it attributes to Mercedes technical director James Allison; the article does not report a measured gain.

This source finding must be read within the stated scope and source context. Russell’s response to a proposed scale of performance gain from Mercedes’ upgrade. Ahead of the early-October 2026 race weekend. Allison’s earlier remarks are available here only through RacingNews365’s account. The one-second figure is the publication’s extrapolation.

[3]

Russell described this as a large individual upgrade step because of the long interval between packages, but said it represented a normal development trajectory across that interval.

This source finding must be read within the stated scope and source context. Russell’s assessment of the package’s size relative to the time since the previous upgrade. His remarks ahead of the October 2026 package. His description does not quantify an achieved lap-time improvement. The page conflicts with his May reference on when the previous upgrade arrived.

[3]

Russell said the package mainly aims to increase downforce without fundamentally changing the car, while retaining its low drag on straights. This describes an aim and assessment, not a verified performance outcome.

This source finding must be read within the stated scope and source context. The intended technical effect, as described by Russell. Before the package’s first reported use in October 2026. The supplied page contains no measured before-and-after performance data.

[3]

Russell expressed hope that the upgrade would move Mercedes back towards the front on circuits he said had been more challenging over the previous six races. He did not present that improvement as an accomplished result.

This source finding must be read within the stated scope and source context. Russell’s expectation for circuits he considers challenging for Mercedes. Looking ahead from 1 October 2026. The characterization of the preceding six races and the expected improvement are Russell’s assessments in the supplied interview report.

[3]

Corrections and updates to this story

01 Oct 2026, 21:28

Updated with a material new development verified through a separate News Made Clear newsroom run.

01 Oct 2026, 17:22

Updated with a material new development verified through a separate News Made Clear newsroom run.

This article was produced with AI assistance. Source references make its supporting evidence traceable.