It was always going to be a tense homecoming. When Honda Racing Corporation (HRC) president Koji Watanabe walked into the Friday press conference at the Japanese Grand Prix, the questions were waiting. Aston Martin had not completed a full race distance in the 2026 season. Both Fernando Alonso and Lance Stroll had retired from Australia and China. The culprit, by all accounts, was the Honda power unit — and the story of how the two parties ended up here had become one of the most uncomfortable narratives in the paddock.

At the centre of it all was a claim from Adrian Newey: that Aston Martin didn’t realise until November 2025 just how far Honda’s F1 operation had drifted from its championship-winning peak. Watanabe’s response at Suzuka was measured but firm — it was, he said, « a misunderstanding. »

What Newey Said — And Why It Stung

Speaking earlier in the season, Aston Martin’s technical figurehead Adrian Newey described a trip he made with team CEO Andy Cowell and owner Lawrence Stroll to Tokyo in November 2025. The purpose was to address rumours that Honda’s new power unit was falling short of its target power output ahead of the 2026 campaign. What they found was more concerning than anticipated.

« A lot of Honda’s original group had disbanded. The group that reformed was actually fresh to Formula 1 — without the experience they had previously. » — Adrian Newey, Aston Martin

Newey estimated that only around 30 percent of the engineers who had worked on Honda’s dominant power units during the Red Bull era — the ones that powered Max Verstappen to his maiden world championship in 2021 — were still part of the project. The rest had been absorbed into other Honda divisions or had simply moved on during the years Honda officially stepped away from Formula 1.

The implication was uncomfortable: Aston Martin had entered one of the most ambitious technical partnerships in their short F1 history without a full picture of the workforce behind the engine they were banking on.

The Problem That Grounded Both Cars

The 2026 season began before the partnership’s issues became publicly undeniable. During pre-season testing in Bahrain, a severe vibration problem emerged from the Honda power unit. The vibrations were not merely a performance concern — they were a physical one. The oscillations transferred through the car’s structure directly into the drivers’ hands, raising the spectre of permanent nerve damage.

The root cause was traced to the interaction between Honda’s new power unit architecture and the 2026 regulations, which dramatically increase the role of hybrid energy recovery. Managing the new systems reliably at race pace proved beyond Honda’s current capabilities in the early part of the season, compounding a difficult situation for a team that had arrived in 2026 with genuine championship ambitions.

Watanabe’s Response: A Different Story

Speaking at the Japanese Grand Prix, HRC president Koji Watanabe did not deny that Honda faced challenges — but he pushed back firmly on the framing that the company had somehow hidden its situation from Aston Martin, or that a lack of experienced personnel was the root of the problem.

« Basically, I think that it’s a misunderstanding. Our policy is to rotate the engineers of the motorsports regularly to mass production, or more advanced technologies like jet, or eVTOL, or hydrogen — something like that. » — Koji Watanabe, HRC President, Japanese GP press conference

Watanabe’s explanation reframes the situation significantly. Honda’s staff rotation policy — moving engineers between its motorsport division and its broader industrial projects — is presented not as a symptom of disorganisation, but as an intentional structural approach. The people who left the F1 project between 2022 and 2023 did not abandon it; they were redeployed to other areas of Honda’s vast technology portfolio, from mass production vehicles to jet engines and eVTOL aircraft.

The HRC president acknowledged, however, that Honda had effectively started the 2026 cycle from a position behind its rivals. When the company formally announced its return to Formula 1 as a power unit supplier in 2023, its F1-specific workforce had to be rebuilt — and that rebuilding process cost time that competitors had already spent developing their 2026 units under the new regulations.

A Partnership Built on Optimism — and Incomplete Information?

The tension between these two accounts — Newey’s suggestion of a late and unwelcome discovery, and Watanabe’s insistence that it was a misunderstanding — points to something more nuanced than a simple breakdown in communication. It suggests that both parties may have been operating with different assumptions about what Honda’s reconstituted F1 project actually represented.

Aston Martin, flush with investment and Adrian Newey’s prestige, may have expected to inherit the institutional knowledge that had made Honda a dominant force with Red Bull. Honda, for its part, likely believed its rotational model and technical processes were sufficient to meet the challenge — even if the specific faces had changed. The gap between those two expectations is, perhaps, the real misunderstanding.

What is not in dispute is the outcome. Aston Martin’s 2026 season has begun in the worst possible fashion, with a team that was supposed to challenge at the front finding itself unable to finish races. Honda has committed to resolving the vibration issues, and both parties have publicly reaffirmed their partnership. But the damage to confidence — inside the team, among its drivers, and in the paddock — is harder to repair than a power unit.

What Comes Next

For Honda, the Japanese Grand Prix was an opportunity to show resolve on home soil — and Watanabe’s willingness to face the media directly at Suzuka was a signal that HRC is not retreating from scrutiny. Engineers from both Honda and Aston Martin have been working closely on solutions, and incremental improvements to the power unit’s reliability have been reported since the early-season disasters.

For Aston Martin, the priority is straightforward: start finishing races. The technical talent assembled at Silverstone — with Newey at its centre — gives the team long-term credibility. But 2026 is already a season in damage-limitation mode, and every retirement widens the gap in the constructors’ standings. The partnership with Honda was supposed to be Aston Martin’s great leap forward. For now, it remains a leap of faith.