{"id":38650,"date":"2026-01-21T10:32:26","date_gmt":"2026-01-21T15:32:26","guid":{"rendered":"https:\/\/lastwordonsports.com\/motorsports\/?p=38650"},"modified":"2026-01-21T10:39:53","modified_gmt":"2026-01-21T15:39:53","slug":"the-fia-consider-taking-action-on-controversial-mercedes-engine","status":"publish","type":"post","link":"https:\/\/lastwordonsports.com\/motorsports\/2026\/01\/21\/the-fia-consider-taking-action-on-controversial-mercedes-engine\/","title":{"rendered":"The FIA consider taking action on controversial Mercedes engine"},"content":{"rendered":"

Not for the first time before a regulation change, all eyes are on Mercedes<\/a>. Toto Wolff’s team finds itself at the centre of a controversy that could define the 2026 season and the upcoming regulatory cycle.<\/p>\n

Mercedes have managed to develop a solution that increases their engine compression ratio above the 16:1 limit.<\/p>\n

For the sake of clarity, it must be emphasised the German squad’s engine still complies with this maximum ratio during static tests.<\/p>\n

Their design, however, is understood to facilitate an increased compression ratio when the car is out on track. Via thermal expansion, Mercedes can attain a higher value – and by extension unlock more horsepower and performance.<\/p>\n

Mercedes defend their technology<\/h2>\n

The Silver Arrows believe this interpretation of the regulations is legal. Indeed, Toto Wolff’s team<\/a> communicated regularly with the FIA whilst they were working on their engines to ensure its conformity.<\/p>\n

Until now, the FIA have given Mercedes the green light on their controversial trick. However, the last few weeks have understandably seen a growing opposition from other manufacturers.<\/p>\n

Audi<\/a>, Honda and Ferrari are adamant the German team’s trick to increase compression ratio – even if it passes stationary checks – should not be permitted.<\/p>\n

Red Bull are known to have caught wind of this idea some time ago, courtesy of an engineer they signed from Mercedes. Crucially, though, the Milton Keynes outfit have not developed this technology to anywhere near the same extent as their German rivals.<\/p>\n

Because of this, Red Bull<\/a> are not expected to be particularly vocal in defending the legality of this compression ratio solution. After all, any benefit for the Mercedes engine will also extend to their customers teams – McLaren, Williams and Alpine.<\/p>\n

This is the backdrop behind tomorrow’s meeting between the FIA and the teams. Whilst other matters will be discussed, none will compare to this contested engine row.<\/p>\n

Based on the latest reports, the FIA are open to taking action on this loophole.<\/p>\n

This is something that rival manufacturers are set to make abundantly clear in their next meeting.<\/p>\n

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<\/p>\n

Potential resolution could come into effect later in 2026<\/h4>\n

As with any regulatory change, there are inevitably points of disagreement between teams.<\/p>\n

Both on the engine and aerodynamic front, engineers are pushing the very limits of what the rules permit. There can be little doubt that pre-season testing will see clashes emerge about certain components and their legality.<\/p>\n

For now, though, this engine dilemma is seen as central to the upcoming season. Honda, Ferrari and Audi have already voiced their opposition to the FIA about the solution Mercedes have pioneered.<\/p>\n

More recently, Audi have implied that Mercedes could have a massive advantage from their engine trick. Audi CTO Mattia Binotto<\/a> and Technical Director James Key were very clear about their disapproval of this loophole.<\/p>\n

There can be little doubt this perspective is shared by all the non-Mercedes powered teams across the paddock.<\/p>\n

However, with the first round in Australia only a few months away, any action from the FIA on this issue would have to be implemented later in the year.<\/p>\n

It would be both impractical and, for the sake of the Championship, extremely damaging if four out of eleven teams were impacted by a last-minute ruling against a power unit supplier.<\/p>\n

Still, until now, this is not why action against the Mercedes engine<\/a> technology has been doubted. As previously mentioned, the FIA were not kept in the dark when this compression ratio innovation was being developed.<\/p>\n

On paper, this means their reluctance to move against Toto Wolff’s team is fairly self-explanatory. Indeed, this has been the consensus in the build-up to preseason.<\/p>\n

With that said, a new report from The Race<\/a> suggests the FIA does not want this issue to persist into 2027.<\/p>\n

Objections from other manufacturers are severe. Consequently, the implications of allowing this compression ratio solution could be a potentially constant dialogue abouts this issue.<\/p>\n

It should also be noted that, whilst teams will spend money on engine development, there is not an endless pool of resources to pour into power units. Even with certain mechanisms in place to allow trailing manufacturers to recover, some engineers believe any early advantage could be difficult to overcome.<\/p>\n

Because of this, even if the FIA doesn’t take action against the Mercedes solution, the other teams could lodge a formal protest at the Australian GP. Conversely, the other manufacturers could concede that they failed to exploit a loophole in the regulations.<\/p>\n

Still, leaving this to chance is potentially risky, and so reaching some kind of agreement is preferrable.<\/p>\n

This is why, as discussed in previous weeks, clamping down on this compression ratio trick with a regulation change later in the season is one of the options on the table.<\/p>\n

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<\/p>\n

Manufacturers hold their breath<\/h4>\n

There is no concrete figure on how much performance Mercedes would gain from this idea. Even the teams themselves cannot be certain on what increasing compression ratio would mean in terms of lap-time.<\/p>\n

Nevertheless, judging by the reactions of other manufacturers, this is far from insignificant.<\/p>\n

Engine development for the 2026 regulations encapsulates several different areas. From the ICE (Internal Combustion Engine) to electrical management to optimisation sustainable fuels, there are various factors at play.<\/p>\n

This makes putting everything together an extremely demanding task. Therefore, there is real concern that if Mercedes have a substantial advantage, catching up will be a very intimidating task.<\/p>\n

Honda<\/a>, who in theory have the personnel and infrastructure to challenge Mercedes, were relatively downbeat in their official 2026 launch.<\/p>\n

The Japanese manufacturer spoke positively about their progress in the electric side of their power unit. At the same time, they admitted to significant challenges with on the Internal Combustion Engine.<\/p>\n

If a title-winning engine supplier is openly admitting to some issues, it can hardly be a surprise that new manufacturers – particularly Audi – are so vocal about seeking action from the FIA.<\/p>\n

Ultimately, the next 48 hours should reveal the plan of action regarding this extensively discussed compression ratio innovation. Depending on the FIA’s decision, 2026 could be shaped in vastly divergent ways.<\/p>\n

Main photo: Jiri Krenek (Mercedes F1 Media Archive)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Not for the first time before a regulation change, all eyes are on Mercedes. Toto Wolff’s team finds itself at the centre of a controversy that could define the 2026 season and the upcoming regulatory cycle. Mercedes have managed to develop a solution that increases their engine compression ratio above the 16:1 limit. For the […]<\/p>\n","protected":false},"author":4927,"featured_media":38651,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","sfio_featured_image":false,"sfio_embed_code":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","footnotes":""},"categories":[4,3],"tags":[2582,121],"class_list":["post-38650","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-formula-1","category-news","tag-f1-2026-season","tag-mercedes"],"modified_by":"Jaden Diaz-Ndisang","_links":{"self":[{"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/posts\/38650","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/users\/4927"}],"replies":[{"embeddable":true,"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/comments?post=38650"}],"version-history":[{"count":4,"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/posts\/38650\/revisions"}],"predecessor-version":[{"id":38655,"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/posts\/38650\/revisions\/38655"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/media\/38651"}],"wp:attachment":[{"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/media?parent=38650"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/categories?post=38650"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lastwordonsports.com\/motorsports\/wp-json\/wp\/v2\/tags?post=38650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}