Honda replaces F1 power unit chief as Aston Martin struggles deepen in 2026

Honda Racing Corporation has replaced the head of its Formula 1 engine programme, naming Yoichiro Fukao as Large Project Leader with effect from 1 October 2026, succeeding Tetsushi Kakuda in a move the manufacturer described as a “planned transition.”

Fukao currently serves as Kakuda’s assistant and head of the software division. Honda framed the appointment as a deliberate generational handover, stating the goal is to “ensure the reliable transfer of technical expertise to the next generation of engineers” while simultaneously accelerating power unit development ahead of further regulatory changes expected from 2027.

“Following the introduction of the new regulations in 2026, and with further regulatory changes expected from 2027 onwards, Honda aims to establish a robust development framework and deliver a highly competitive PU by transitioning to the new structure at an early stage,” the company said in a statement.

The timing reflects the severity of Honda’s struggles since the new technical regulations came into force. The Japanese manufacturer has endured a troubled opening to the 2026 season, beset by both performance and reliability problems serious enough to qualify it for additional development assistance beyond the standard Accelerated Development Under Observation framework. In May, Honda was granted extra power unit help, and discussions continued over the Spanish Grand Prix weekend between FIA president Mohammed Ben Sulayem, Aston Martin owner Lawrence Stroll, and driver Fernando Alonso regarding what further measures might be available.

Among the options being explored is a further revision of the ADUO upgrade system, with both Mercedes and Red Bull Ford Powertrains said to be open to additional adjustments. The conversations underline how far Honda currently sits from the front of the field, and how much pressure has built on the partnership with Aston Martin.

By installing new leadership now, Honda is signalling that its primary focus has shifted toward building a significantly overhauled power unit for 2027, when the regulatory framework is expected to evolve again. Whether Fukao can deliver the step-change in competitiveness that Aston Martin requires will become one of the defining questions of the team’s medium-term future.