Honda is facing significant challenges as it develops its all-new power unit for Formula 1's 2026 regulation overhaul.
That's the admission of Honda Racing Corporation boss Koji Watanabe, who has revealed that the Japanese manufacturer is "fighting" to ensure its engine is competitive under the new rules.
His comments come just days after Adrian Newey suggested that one manufacturer could dominate the new era, depending on how well they adapt to the radical technical changes.
With Red Bull set to build its own power units in partnership with Ford from 2026, Honda will shift its focus entirely to its new partnership with Aston Martin. Newey, who will join the Silverstone-based team in March, will oversee their transition to Honda power.
Speaking at the Daytona 24 Hours, Watanabe was asked about Honda's progress on its 2026 power unit.
"We are fighting," he admitted.
"We are currently doing our best to achieve results next year. Everything is new."
The 2026 regulations introduce not only major chassis changes but also a significant shift in power unit design. The new engines will feature a much higher reliance on electrical power, requiring a substantial increase in energy recovery efficiency.
"The 355 kW (electric) engine is new – very compact," Watanabe explained. "The lightweight battery is also not easy to develop. And the engine is small but has a lot of power.
"Everything is very difficult, but we are trying our best."
