Honda set latest Aston Martin mission as 'unknown' threat looms

Honda has stressed the importance of maximising its final races with its current power unit specification, with Shintaro Orihara identifying Spa-Francorchamps as a crucial test of energy deployment and reliability before Aston Martin's new internal combustion engine arrives after the summer break.

The Japanese manufacturer's first ICE upgrade, developed under the FIA's Additional Development and Upgrade Opportunities (ADUO) system, is targeted for the Dutch Grand Prix at Zandvoort on 23 August.

That leaves the Belgian and Hungarian Grands Prix for Honda and Aston Martin to sharpen their understanding of power unit behaviour, with Spa's long straights and limited harvesting making this weekend especially significant.

It has been a bruising start to life together. Aston Martin has scored just a single championship point from the opening nine rounds, courtesy of Fernando Alonso's 10th-place finish in Monaco.

The Honda power unit has been plagued by severe vibration issues that have damaged batteries and components, forced conservative engine modes and left both Alonso and Lance Stroll fighting at the very back of the grid.

Orihara, who is Honda's trackside general manager and chief engineer, outlined the challenge that Spa presents ahead of the weekend in the Ardennes.

"Spa is home to the longest track on the 2026 calendar, and it's also one of the most popular amongst drivers and fans. It's a technical circuit for the drivers, with complex corner sections," he said.

"The combination of long straights and high-speed corners makes it a very challenging circuit for the engineers too, both to predict throttle application and looking at energy deployment over the course of the lap.

"It will be a test for manufacturers in terms of energy management, so we need to consider how we will deploy MGU-K power on the long straights.

"The harvesting here is quite limited, even considering the circuit length. This puts more emphasis on getting the deployment plan right. The straights are also a demand on the power unit in general, not only for performance but also for reliability."

The 'unknown' variable

The energy deployment lessons from Spa carry added significance. Orihara identified a direct link between this weekend's findings and future circuits.

"We have two more races before we introduce the new engine," he added. "It's important to keep learning with this current spec, so we can take those energy deployment findings into future races, like Monza, where we also have the long straights."

The unpredictable Ardennes weather, however, adds another variable to Honda's data-gathering mission.

"An added unknown is the changeable weather conditions at the circuit," Orihara pointed out.

"At Silverstone it remained dry, so Spa could be the first time where we have proper wet conditions in a session. In terms of the weather, anything can happen here."