Inside the Formula 1 paddock, the disadvantage Aston Martin faces due to the challenges of the Honda engine is becoming increasingly clear. Assessing the AMR26 after the first race of the season is complex. The noticeable difficulties of the Power Unit tend to overshadow any potential progress made in chassis development and aerodynamics. Meanwhile, speculation is growing about the power deficit of the Honda engine fitted by Aston Martin.
During the Melbourne Grand Prix, both Fernando Alonso and Lance Stroll returned to the pits in what initially appeared to be retirements. However, both cars later rejoined the track for several laps to gather further data. Ultimately, Alonso retired for good, while Stroll finished last, 15 laps behind the leader.
Expectations for the Chinese Grand Prix are not very different from what was seen in Australia. Honda is set to introduce certain Power Unit upgrades ahead of the third race in Japan, which may help narrow the performance gap.
Aston Martin suffers a 100-hp deficit compared to Mercedes
According to reports from Marca, paddock insiders suggest that the Honda engine powering Aston Martin is about 80-100 hp down compared to the Mercedes engines, which currently appear to offer the superior package. The key issue with Honda’s Power Unit, however, is the significant vibration experienced during acceleration.
Both the engine and the gearbox endure extreme stress due to these intense oscillations. This negatively impacts reliability, leaving the car unable to complete a full race distance at this stage. In recent days, concerns have also been raised about driver health, as prolonged exposure to severe vibrations could potentially cause long-term damage.
Over the coming race weekends, the first Honda development upgrades will be closely monitored. More substantial updates are expected around mid-season, with the ultimate goal of resolving all issues ahead of the 2027 campaign.
The 100-horsepower mountain that Aston Martin must climb highlights the brutal reality of the 2026 engine regulations. With Kimi Antonelli and George Russell reaping the rewards of Mercedes’ superior “straight mode” and energy deployment, Adrian Newey’s aerodynamic refinements at Silverstone are being rendered almost invisible. As the teams head to the Shanghai International Circuit—a track famous for the longest straight on the calendar—the AMR26 faces its toughest test yet. If Honda cannot find a way to damp the vibrations and unlock even a fraction of that missing power, it will be another long weekend of data collection rather than trophy hunting for the green cars.
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