Mercedes arrived on the Canadian Grand Prix with its first main improve bundle of the season. The workforce of championship chief Kimi Antonelli and George Russell revised, amongst different issues, the entrance wing and ground, though rivals additionally took an curiosity in a number of options on the rear of the W17.
Since winter testing, groups have been looking for intelligent methods to increase the diffuser, for instance by introducing extensions connected on to the rear crash construction. Making the diffuser work as successfully as potential is an important side, particularly now that the present technology of automobiles depends much less on floor impact.
Frederik Vesti, Mercedes
Photograph by: Sam Bloxham / LAT Photographs by way of Getty Photographs
The diffuser Mercedes launched in Montreal significantly caught the attention due to a number of additions on its higher part – within the type of spike-like profiles. Mercedes added serrated profiles alongside the higher part of the W17’s diffuser, masking greater than half of its width. Their function was successfully to increase the diffuser and improve its impact.
After Ferrari and several other different rivals noticed the answer, the Scuderia requested the FIA for clarification and raised the query of whether or not it will be allowed to develop an identical design, however was not given the inexperienced gentle to take action.
Motorsport.com has discovered that the FIA primarily needed to make clear its stance, because the Mercedes improve might open the door to extra inventive options that the governing physique wouldn’t be snug with.
Lewis Hamilton, Ferrari
Photograph by: Andy Hone/ LAT Photographs by way of Getty Photographs
That led to a technical directive following the Barcelona Grand Prix, a doc that comes into drive from the Austrian Grand Prix weekend onwards.
As of 2026, such a doc is known as an FIA doc slightly than a technical directive, though that’s only for consistency functions, as an FIA doc can cowl all areas from sporting issues to technical ones.
Mercedes has acknowledged that, in step with the brand new tips issued after Barcelona, some ‘minor tweaks’ to the diffuser had been required, and people modifications had been already seen throughout media day in Austria in varied photographs.
The diffuser extensions are nonetheless on the W17 to a sure extent, however with out the spike-like profile. Other than Mercedes, Racing Bulls has additionally been requested to vary its diffuser extensions.
The present scenario nonetheless leaves some room to discover this space in a much less excessive approach, which has been confirmed by different groups within the paddock. They clarify that whereas the way in which Mercedes carried out the trick on its Montreal-spec diffuser is now prohibited, nearly all groups are nonetheless exploring methods to successfully lengthen the diffuser.
Ferrari automobile tech element
Photograph by: Richard Byles / Getty Photographs
That can be seen in photos of Ferrari’s 2026 challenger. The picture above reveals extensions on the diffuser of the SF-26. Buyer workforce Haas makes use of an identical idea, albeit with a number of parts.
These options – similar to Mercedes’ revised Austria spec – fall inside the boundaries of what’s permitted, though the FIA needed to shut the door to extra excessive designs going ahead.
Pictures from Austrian GP – Thursday
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