The build-up to Formula 1’s most unforgiving weekend has taken a worrying turn for Aston Martin, with Fernando Alonso admitting that a persistent gearbox problem could leave the team facing an alarming possibility: not being able to race competitively – or safely – in Sunday’s Monaco Grand Prix.
After mitigating the Honda-related reliability troubles that plagued the opening rounds of the season, Aston Martin now finds itself battling a fresh technical headache.
What first emerged in Miami has quickly become one of the team's most urgent concerns, and with the narrow barriers of Monte Carlo waiting, the stakes could hardly be higher.
According to Alonso, the issue centers on unpredictable gearbox behaviour during downshifts, a fault that could have serious consequences on a circuit where precision is everything and mistakes are punished instantly.
In Friday’s opening practice session, the Spaniard was caught out by his rear wheel suddenly locking the run down to the Nouvelle Chicane, very nearly crashing. But it’s unclear if the incident was related to the AMR’s gearbox issues.
A problem too dangerous to ignore
The Spaniard revealed that the team has been struggling with the gearbox ever since the Miami Grand Prix, where the issue significantly affected the drivability of the car.
"We have struggled with the gearbox since Miami," Alonso told media on Thursday.
His concerns grow even sharper when considering the unique demands of Monaco, where drivers repeatedly brake from high speed into tight corners bordered by walls.
“Monaco is not the place to have a random downshift, and you have rear [brake] locking or [engine] pushing or something like that. Then you will crash into the wall, and the driver will look stupid,” he added. .
"We are passengers sometimes when you put one gear down and you have push from the engine, like going on full throttle. So, that's the thing that we needed to make sure that we make a step in the right direction in Canada, and Monaco will tell the truth.”
The description paints an unsettling picture. A car unexpectedly accelerating or behaving unpredictably under braking is dangerous at any circuit. Around Monaco’s tight confines, it could be catastrophic.
'Probably, we cannot even race'
Alonso stopped short of guaranteeing Aston Martin would have the problem solved in time and openly acknowledged the seriousness of the situation.
"If you have the downshift problem like we had in Miami, probably we cannot even race, because we will crash in one of the braking points due to a very different downshift type,” he said.
"If we have reliability issues like at the beginning of the year, that [meant that] we completed eight, 12 laps or something like that, then it doesn't change much to be in Monaco. So we need to put everything together.
"It's what we've been working on the last two weeks since Canada, because we know that it's an important weekend and we are paying a lot of attention to this weekend and all the details.”
Those comments underline the anxiety surrounding Aston Martin heading into one of the calendar’s most demanding events.
While rivals arrive in Monaco focused on setup tweaks and qualifying pace, the Silverstone-based squad is still trying to ensure its car can safely complete the race distance.
For Alonso and Aston Martin, the coming sessions may reveal whether the issue has finally been tamed – or whether one of Formula 1’s biggest weekends could become a survival mission before it has even truly begun.
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