The so-called ‘motorcycle trick’ allegedly used by Mercedes continues to cause friction within the Formula 1 paddock. While the German manufacturer appears relaxed about the controversy, rival teams and engine suppliers are far less comfortable. Aston Martin’s Adrian Newey has now weighed in, suggesting that unity exists across the grid — with one notable exception.
With brand-new engine and aerodynamic regulations coming into force this season, every team is pushing the boundaries in search of performance. Innovation is inevitable, but not all ideas are welcomed equally.
Mercedes’ controversial interpretation
Mercedes, which manufactures its own power units and supplies Williams, McLaren and Alpine, has reportedly identified a grey area in the new regulations. According to rivals, the team has exploited a clever approach to engine compression ratios.
When inspected in the garage, the Mercedes engine appears fully compliant. However, once on the track and at operating temperature, the compression ratio allegedly increases, delivering a measurable performance advantage. While this solution is technically legal under static checks, competitors argue that it violates the spirit of the rules.
Engine manufacturers push back
Reaction from rival manufacturers was swift. It is understood that Ferrari, Honda and Audi have jointly submitted a formal complaint to the FIA, voicing strong objections to Mercedes’ approach. For several days, Red Bull’s position was unclear, with reports suggesting that the team may have been considering similar strategies.
However, Red Bull now appears to have aligned itself with the other manufacturers. The FIA is currently examining the issue closely, keen to avoid legal escalation and ensure consistent interpretation of the new regulations before the season opener.
Aston Martin and Newey have also taken a stand
Aston Martin, which is running Honda power units for the first time this year, is firmly on the opposing side. Team principal Adrian Newey did not hide his frustration when speaking to Sky Sports News.
“I’m obviously a bit biased,” he admitted. “I think everyone, except one manufacturer, feels the same way. I think we’ll find out where this ends in Melbourne.”
His comments suggest mounting pressure on the FIA to act decisively before any competitive damage is done.
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Tempering expectations for Aston Martin’s new car
Beyond the engine debate, Newey has also sought to temper expectations surrounding Aston Martin’s striking 2026 challenger. The car attracted a lot of attention at the first winter shakedowns in Barcelona, particularly due to its rear suspension, sidepods and nose design.
However, Newey has stressed that aesthetics do not guarantee immediate success. Aston Martin’s development programme has faced delays, leaving the team playing catch-up.
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Delays could cost early-season points
When asked whether these setbacks would impact Aston Martin’s performance early in the season, Newey was candid. “To be honest, it certainly will,” he said.
The team only entered the wind tunnel in mid-to-late April, whereas most rivals began development back in January. In addition, competitors had already invested heavily in CFD work and overall mechanical concepts.
An extreme interpretation — but is it the right one?
Newey described Aston Martin’s car as ‘one of the more extreme interpretations’ of the new regulations, telling the BBC that it differs noticeably from rival designs.
Whether that bold approach will prove inspired or misguided remains unclear. As Newey put it: “Only time will tell whether it’s the right or the wrong interpretation.”
For now, both Aston Martin’s ambitions and Mercedes’ controversial innovation are under intense scrutiny as Formula 1 heads towards a pivotal new era.
NEXT ARTICLE – FIA call last minute powertrain crunch meeting in Bahrain
Just over twelve months ago, the FIA called a meeting of the powertrain manufacturers to discuss concerns that the all new 2026 F1 cars would run out of electrical charge along the straights. The proposal was to reduce the amount of electrical energy from its current 50/50 power split with the internal combustion engine.
To enforce any changes, there needed to be a super majority agreement, meaning four of the five manufacturers were required to vote in agreement. Audi and Honda in particular were not in favour of a tweak in the regulations and so the matter was swept under the carpet.
Now the fears of many have come to pass as in the Barcelona shakedown a number of drivers reported a loss of electrical power along the front straight and that they were forced to lift and coast into corners to conserve electrical energy. The FIA has now slated a pow wow with the manufacturers during the upcoming Bahrain pre-season test where the matter may well be revisited, although the primary purpose for the meeting is another topic entirely.
Mercedes new powertrain questioned for legality
Ferrari, Audi and Honda have been corresponding with the FIA in recent weeks since it came to light that Mercedes are using a metallurgical trick to defeat F1 governing body’s test for compression ratio’s in the internal combustion engine.
Engineers having left Mercedes High Performance Powertrains in Brixworth have allegedly spilled the beans on their former employer. The FIA test is conducted at ambient temperature when the power unit is ‘cold.’ However, once up to operating temperature, expansion in the specially selected metallic compound closes off a pocket in the cylinder, in effect reducing the cubic capacity and upping the compression ratio estimated at 18.1.
Initially it was believed that Red Bull too were exploiting a similar technology in their powertrain, although this now appears not to be the case. Red Bull have joined the other three manufacturers and are ready to protest the Mercedes power unit in an effort to have it declared illegal.
At the Barcelona shakedown, as happens each preseason, the teams had their espionage divisions in full action. Readings are taken by engineers of their rival’s engine notes at certain points around the circuit which are then analysed and reveal a whole host of information…CONTINUE READING THIS ARTICLE
Craig.J. Alderson is Senior Editor at TJ13, where Craig oversees newsroom operations and coordinates editorial output across the site. With a background in online sports reporting and motorsport magazine editing, he plays a key role in maintaining consistency, speed, and accuracy in TJ13’s coverage.
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