Aston Martin arrived in Miami with something far more valuable than a shiny new floor or a tweaked front wing: a chance to finally trust its own car again.
After a jittery start to the 2026 season defined by harmonic resonance headaches and unwanted vibrations, Aston Martin and Honda came away from the Miami Grand Prix weekend with a clean, quietly significant milestone — both AMR26s saw the chequered flag across Sprint and Grand Prix distances. In a year when the new rules package is punishing enough without self-inflicted attrition, simply banking mileage has started to feel like a competitive advantage.
The breakthrough traces back to an unusual but telling decision made after Japan. Aston Martin effectively sacrificed an asset in the short term by leaving one of its race cars behind so Honda could take it to Sakura and work through vibration countermeasures with the chassis in the loop, not just the power unit on a bench. In modern F1, where every day with a car in-house is precious and every logistics move is a minor operation, it was a statement of priorities: stop firefighting, then start racing.
That gamble paid off in Florida. Fernando Alonso, who finished ahead of Sergio Perez’s Cadillac in both the Sprint and the Grand Prix, reported a car that finally felt “normal” again — the sort of understated driver feedback that engineers love, because it usually means the distracting problem has actually gone away rather than merely changed shape.
“No issues,” Alonso said afterwards. “Honestly, it was more the gearbox the whole weekend than the engine… It was very weird on the downshifts and the upshifts, so not very well in control.
“So that’s the fix number one for Canada. I think with all these heavy braking in Canada, we need to improve the gearbox behaviour at the moment.”
That line matters, because it’s effectively Alonso moving the goalposts. For the last few rounds, the conversation around Aston Martin’s weekends has been less about lap time and more about whether it would survive long enough to have one. In Miami, the power unit wasn’t the story — the transmission feel was. That’s progress.
Aston Martin team boss Mike Krack didn’t dress it up as anything other than a joint technical grind, but his explanation underlined why leaving the car in Japan was so important. Honda had already suggested the vibration signatures weren’t appearing on its own test benches; the destructive resonance only emerged when the power unit was integrated into the Aston Martin package.
“I think we are happy with it, and I think our partner wants to do more,” Krack said, speaking alongside Honda’s Shintaro Orihara. “We left one of the race cars in Sakura for some dyno testing. Honda is obviously a huge company… The fact that we could leave a car there helped us to mitigate some of the issues that we were having.
“The transmission path is something that you only have with the real race car… it allowed us to work on the interfaces, basically, and our partner obviously could work on the origin of the whole thing. So I’m quite happy with the result.”
Orihara was equally clear that this wasn’t a magic power-unit-only fix, but something more systemic — the kind of solution F1 teams often need but don’t always manage to execute quickly.
“After the Japanese Grand Prix, I mentioned HRC and Aston Martin worked very hard to bring countermeasures here,” he said. “We confirmed that they are working well… We have completed the full race distance and also the Sprint race distance without any major reliability issues.”
Asked whether the measures applied to the chassis or the power unit, Orihara’s answer told you why the problem was so stubborn in the first place: “It’s a combination… vibrations have been coming from energy from vibration into the chassis side and then transferring to the power unit.
“We needed countermeasures from both sides, but we combined them into one countermeasure, and that works very well.”
The timing is useful, too. Miami was also a weekend where energy management sat under a brighter spotlight: the 8.0mJ harvestable energy figure remained, but the superclipping rate increased to 350kW from 250. There had been paddock noise about whether Honda could comfortably operate at that higher rate, though sources dismissed it, and Orihara declined to be drawn when asked directly. Either way, the bigger point for Aston Martin is that you can’t optimise energy deployment, driveability and tyre usage if you’re constantly in damage-limitation mode.
That’s where the mood in the Aston Martin camp shifted. Krack framed the weekend less as a single result and more as the moment the team can start building a proper development loop — because it’s been chasing lost running since pre-season.
“Every lap you do, you learn,” he said. “We also need to keep in mind that we are massively behind in terms of laps from the beginning of the season.
“So I think the fact that you can race each other because you have the reliability, and also the fact that you can race with a competitor, gives you additional information and gives you something to improve your package for the races to come.”
He even pointed to tyres — not as filler, but as an illustration of what reliability buys you. Aston Martin was an outlier in taking the soft tyre in the Sprint, and Krack argued it was the right call. That sort of confidence to play your own game, rather than copy the field because you don’t have the data, only really arrives when the car stays alive long enough to teach you something.
Orihara echoed that, highlighting how Miami’s heat and humidity gave Honda useful readouts on drivability and “warm function” behaviour — the kind of conditions that expose weaknesses quickly, but only if you’re actually circulating.
Now comes the next phase, and it’s arguably the one Aston Martin has been waiting for since Barcelona running in late January: stop asking “will it finish?” and start asking “how quick is it really?”
Honda, Orihara said, wants to move on to “optimise our data setting for energy management and also driveability,” adding: “There is still a lot of room to improve on our power unit, but that’s the next step for us.”
For Aston Martin, the subtext is obvious. Miami didn’t suddenly make it a front-runner. But it did restore something you can’t fake in this sport: a baseline. And once you’ve got that, the season stops being a series of emergency meetings and starts becoming a championship campaign again — even if, as Alonso warned, the next headache might be coming from the gearbox rather than the engine.
