Honda RA626H: the power behind Aston Martin’s 2026 new era
A regulation reset can make or break a generation. For 2026, Aston Martin becomes Honda’s exclusive works partner in Formula 1 — and the RA626H is the centrepiece: a new hybrid power unit designed for a 50/50 split between combustion and electrification, running on advanced sustainable fuel, and built to define Aston Martin’s next championship push.
Why the RA626H matters
2026 power units keep the 1.6-litre turbo V6, but delete the MGU-H and massively increase electrical power. The result is a new performance map: energy management becomes as decisive as outright horsepower.
Works partnership, exclusive focus
Honda supplies Aston Martin as a works partner from 2026. That status is about more than a badge: it’s joint planning, packaging targets, and a single mission — make the car and power unit behave like one system.
A clean-sheet rear end
For the first time in years, Aston Martin controls its own rear-end architecture. Honda develops the RA626H in Sakura, while Aston Martin builds its own transmission at Silverstone — integration becomes a competitive weapon, not a constraint.
The pillars of the Honda RA626H concept
The RA626H is not “just” a new engine. It is a new hybrid philosophy: the combustion unit is optimised for efficiency and driveability, while the electrical system delivers a step-change in deployment and harvesting — with packaging and cooling shaping everything.
2026 shifts the balance: the MGU-K rises to 350 kW, and electrical energy contributes around half of total power. The RA626H is built for this reality — maximising deployment without sacrificing stability over a lap.
Regulations reduce the internal combustion engine’s contribution (around 400 kW in the 2026 framework), making efficiency and torque delivery the priority. The goal is consistent, controllable acceleration that supports the hybrid system rather than fighting it.
With no MGU-H, layouts evolve — but cooling, battery mass, turbo sizing and exhaust routing still dictate the car. Aston Martin’s 2026 project is built around tight Honda–Silverstone collaboration, targeting a compact, efficient rear end.
How the RA626H stacks up against the 2026 field
In 2026, the grid features five power unit manufacturers. The performance gap won’t be decided by “engine power” alone: harvesting, deployment, software, reliability and packaging are the new battlegrounds — and each manufacturer brings a different strength profile.
Expect Mercedes to treat 2026 as a systems war: energy efficiency, repeatability and rapid optimisation. For Aston Martin, beating Mercedes-powered rivals means matching them on deployment control and reliability as early as possible.
Ferrari’s traditional strength is in integrating the whole car around its power unit and chassis concept. The RA626H/Aston pairing must match that “one-idea” coherence — especially in cooling, rear suspension behaviour and energy recovery balance.
Honda’s advantage is clarity: one team, one target, one integrated architecture. The RA626H launch signals confidence, but the decisive test is how quickly the package converges — performance, durability and software calibration — across the first development year.
RA626H in four snapshots
Swipe horizontally on mobile to explore the key 2026 themes.
A brief timeline to the RA626H debut
The RA626H arrives at the exact moment Aston Martin reshapes its technical identity — and 2026 becomes the first true “all-in” works era.
This partnership is a decisive step in our long-term ambition to fight for world championships.
Details enthusiasts will watch in 2026
- MGU-K deployment: how often Aston can run full electrical power without overheating or derating.
- Driveability: throttle mapping that blends V6 torque with electric boost for stable corner exits.
- Harvesting balance: recovery under braking/coasting/on-throttle without compromising lap time.
- Cooling discipline: tight packaging vs. hot-weather robustness — a season-long trade-off.
- Reliability curve: early mileage and failure rate often decide how aggressive upgrades can be.
- Chassis–PU interface: gearbox and rear suspension behaviour as a single “rear-end system”.