Honda confident in fixes for Aston Martin's engine woes ahead of Miami GP

Honda is confident it has finally turned a corner regarding the severe power unit issues that have derailed Aston Martin’s start to the 2026 Formula 1 season, arriving at this weekend’s Miami Grand Prix with targeted hardware fixes.

The toll of excessive vibrations

The vibration issues have not only hampered performance but have also caused extreme physical discomfort inside the cockpit for both Fernando Alonso and Lance Stroll. The sheer severity of the problem has frequently limited their crucial track mileage, culminating in the two-time world champion being forced into retirement during the Chinese Grand Prix.

However, a glimmer of hope emerged during the last outing in Japan, where Alonso managed to become the first Aston Martin driver to complete a full race distance this year. Following the Japanese round, the Formula 1 calendar entered an enforced five-week hiatus due to the cancellations of the Saudi Arabian and Bahrain events.

Honda capitalized on this unexpected break, transporting one of the AMR26 chassis directly to its Sakura research and development facility. There, engineers conducted extensive dyno bench testing, effectively replicating on-track conditions to isolate and address the root cause of the vibrations.

Honda's Sakura intervention

Speaking in Miami, Honda’s trackside general manager Shintaro Orihara detailed the rigorous process undertaken during the break.

"We brought the exact race car to Sakura, then we did some testing, static testing, to measure the vibration of the actual car," Orihara explained. "Then we applied some countermeasures on the car and checked the vibration situation on the car and also we gathered a lot of data from the car, because in the factory we can put a lot of sensors."

By leveraging the full technical might of HRC, Orihara confirmed that the team has made tangible breakthroughs.

"We gathered all the knowledge of HRC engineers and then we found some good progress on the vibration. Then we introduced the countermeasure into this event," he added. "So, we found good progress on vibration on the engine's battery side and also we can see some good progress on vibration for the driver. So we are interested to see how that works at the track here."

While Orihara remained tight-lipped on the specific technical details of the "countermeasures," he did reveal that the changes are strictly hardware-related and expressed confidence in the package brought to Florida.

Chassis woes and the weight battle

While Honda has focused on mitigating the power unit vibrations, Aston Martin has been simultaneously battling inherent flaws within the AMR26 chassis. A primary concern is the car's mass; the 2026 challenger is understood to be at least 10kg over the newly regulated minimum weight limit of 768kg—a significant drop from the previous 800kg benchmark that many teams are struggling to meet.

Aston Martin’s chief trackside officer, Mike Krack, opted not to elaborate on the engine specifics but was transparent about the chassis development pipeline.

"There will be changes on the car," Krack confirmed in Miami. "We have worked on several items. Mainly reliability, but then also car weight, driveability was one big aspect and then in terms of external changes, they will come race by race."

Managing expectations in Miami

Despite the optimism surrounding the Sakura intervention, Krack remains pragmatic about the team's immediate prospects as the 2026 Miami Grand Prix gets underway. He echoed Orihara’s belief that the recent collaborative efforts will yield a step forward, but cautioned against expecting an overnight transformation.

"The work that we did together collaboratively over the last weeks, it will lead to a step forward," Krack stated. "I think we will have less and less restrictions going forward. If you look back where we were, Melbourne and Shanghai, we went through all the details already of how these races went and how these events went."

With the immediate focus shifting from survival to performance, Krack acknowledged the steep mountain Aston Martin still has to climb.

"We can clearly see progress on the reliability side, on the collaboration side. I expect another step here. We also spoke in Suzuka that as soon as your reliability issues are mitigated, the spotlight is on performance," he noted. "We have to acknowledge that we have to do some steps there as well. I also said that we cannot expect miracles coming to Miami, and this is the case. We are improving step by step, both reliability and performance, but we must not forget that the same applies to our competitors. It's a development race as soon as the season is on, and it's very tough to catch up."