Honda blames Aston Martin for vibrations after visiting Japanese Grand Prix garage

The relationship between Honda and Aston Martin is already under strain in 2026, with both parties publicly shifting responsibility for the vibration issues that plagued the AMR26 at Suzuka.

A troubling weekend at Suzuka

Aston Martin endured another difficult outing at Suzuka. Lance Stroll failed to reach the finish after suffering a water pressure issue, while Fernando Alonso secured the team’s first finish of the season — albeit in 18th place and a lap down.

According to Spanish journalist Antonio Lobato, Honda’s top officials were far from satisfied.

“But anyway, from my point of view, it’s been a bit of a tough weekend for Aston Martin and Honda, especially for Honda, because they were racing at home,” Lobato said via SoyMotor.

He added that Honda bosses visited the garage while the team started from the back of the grid, describing what unfolded on track as “a real disaster.”

The vibration dispute

At the centre of the dispute are persistent vibrations affecting the AMR26 — a problem serious enough to raise concerns for both Alonso and Stroll.

Aston Martin have implied that the power unit is the root cause. However, Honda strongly dispute that assessment.

The Japanese manufacturer claim that while a vibration exists when the engine is run on the test bench at Sakura, it becomes significantly amplified only once integrated into the chassis.

“And saying that the vibrations when they start the engine, when they put the power unit on the test bench at Sakura, there’s a vibration,” Lobato explained.

“But that this vibration is amplified when they put it on the chassis, as if to say, ‘Hey, you’re to blame too, aren’t you? You as well, aren’t you? You contribute to these vibrations existing.’”

Despite Honda’s assertion that the issue had been significantly improved, Alonso’s onboard footage appeared to contradict that claim. During the race, he was seen briefly removing a hand from the steering wheel — a moment that suggested the problem had not been fully resolved.

The disagreement has inevitably raised questions about the health of the partnership, particularly with both sides now publicly deflecting responsibility.

A crucial one-month reset

Honda have denied rumours of a “deteriorating” relationship with Aston Martin. Nevertheless, the tension is evident, and the situation demands urgent alignment.

The upcoming one-month break in the calendar, following the cancellations of Bahrain and Saudi Arabia, arrives at a critical moment. It provides both organisations with the opportunity to debrief, reconcile differences, and work towards a solution for both the AMR26 chassis and the power unit integration.

Importantly, the cost cap remains unaffected by the two cancelled races. For Aston Martin, that means the team can allocate more resources per remaining event without financial penalty — a potentially significant advantage as they attempt to correct early-season weaknesses.

Whether this pause becomes a turning point or merely delays deeper issues will depend on how effectively Honda and Aston Martin can realign. For now, Suzuka has exposed not only performance shortcomings — but fault lines within the partnership itself.