Aston Martin have acknowledged the scale of their frustration with Honda after Fernando Alonso and Lance Stroll both retired from the Mexican Grand Prix within the opening five laps. Mike Krack admitted that nobody was satisfied with the situation, while Honda confirmed that unusual operating conditions had exposed weaknesses in its power unit’s cooling systems.
The Mexican Grand Prix proved another difficult weekend for Aston Martin, with both drivers failing to reach the chequered flag after separate technical problems.
The team had entered the race hoping to recover from a disappointing run of reliability issues, but instead found themselves confronting another significant setback. The circumstances surrounding the failures have also raised questions about Honda’s ability to deliver consistent performance at altitude.
Aston Martin knew finishing the race would be difficult
Both Alonso and Stroll retired within the opening five laps at the Autódromo Hermanos RodrÃguez, situated approximately 2,285 metres above sea level.
The reduced air density at that altitude places additional demands on Formula 1 power units, particularly their turbochargers, which must work harder to maintain performance.
The 2026 regulations have introduced another complication through the removal of the MGU-H, a component previously capable of helping manage turbocharger response and reduce turbo lag.
Alonso’s weekend had already been disrupted by a technical problem during qualifying, despite the Spaniard believing the team had enjoyed a promising opportunity.
The subsequent race failures were traced to problems involving the power unit’s cooling circuits, with Honda identifying unusual operating conditions as a contributing factor.
Krack admits nobody was satisfied with Honda’s problems
Mike Krack, Aston Martin’s chief trackside officer, explained that the team had already recognised the difficulty of completing the full 71-lap race.
Speaking to the media, Krack acknowledged the frustration felt throughout the organisation, including by its engine partner.
“I don’t think anyone was happy. We have had many retirements, and now another double retirement, so no one can be happy. I think this applies to Honda as well.”
The team considered several potential measures to manage the situation, including running in clear air, adjusting gearbox usage and reducing power.
However, those options quickly proved insufficient to prevent the retirements.
“There is a list of options, but we quickly realized that they were insufficient, and there is nothing you can do then.”
His comments underline the limitations Aston Martin faced during the race. Even with preparations made before the start, the team could not find a practical solution that would allow both cars to complete the distance.
Honda explain what went wrong in Mexico
Honda chief engineer Shintaro Orihara provided further insight into the problems, explaining that the power unit had behaved unexpectedly under the particular conditions encountered in Mexico.
The combination of the formation lap, additional tyre preparation and the circumstances surrounding the start placed considerable demands on the ERS cooling circuits.
Orihara explained that the circumstances were different from those experienced during normal practice running.
“I cannot go into detail, but I can give you more insight. We had the laps to the grid, which is unique, and a tire preparation lap.”
He added: “We had laps in free practice, but in a different situation. So under those special circumstances, our engine behaved a bit abnormally, or not as expected.”
The resulting strain contributed to an MGU-K failure during qualifying, while further cooling-related complications affected the cars during the race.
Honda stressed that traffic was not directly responsible for the failures. Although running behind other cars can make power unit operation more difficult, Orihara said it was not the underlying cause in this instance.
Brazilian Grand Prix provides Honda with another test
Honda has already introduced countermeasures ahead of the Brazilian Grand Prix, covering both hardware and software changes intended to improve the power unit’s robustness.
Although Interlagos does not present precisely the same conditions as Mexico City, its elevated location means the Brazilian weekend provides another useful opportunity to assess the effectiveness of those measures.
Orihara also acknowledged Alonso’s frustration following the latest reliability problems, particularly the Spaniard’s comments about the team needing to learn hard lessons when it mattered most.
“It was tough for Honda as well, and I understand the frustration. Under special circumstances, it lacks robustness, so we can always learn something from these kinds of problems.”
He concluded with a commitment to investigate the failures at Honda’s Sakura facility.
“We will take the old problem to the factory and ask: ‘How can we prevent this from happening again in the future?’”
Honda’s immediate priority remains improving the reliability of its current package, although the manufacturer is also concentrating on its 2027 power unit.
For Aston Martin, however, the Brazilian Grand Prix represents an important opportunity to demonstrate that the Mexican double retirement was an isolated problem rather than another indication of a much deeper reliability weakness.
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The Judge, a nom de plume of an experienced F1 journalist and site founder with long-standing sources across the paddock. With over 30 years of experience in Formula 1 as an insider journalist, I have built trusted connections across the paddock, from race engineers and mechanics to senior team figures. At The Judge 13, I and a handful of trusted colleagues share exclusive Formula 1 news, expert analysis and behind-the-scenes stories you will not find in mainstream motorsport media.
