How a 77cm Pit-Lane Measurement Error Stripped and Reinstated a Monaco Podium, and Why the Fight Isn't Over

The 77cm error that broke the timing system

The controversy stems from how the FIA enforces the pit-lane speed limit. Timing loops embedded in the track surface measure the time a car takes to cover a fixed, known distance. If a car covers that distance too quickly, it is deemed to be speeding. In Monaco, Formula One Management had defined the reference distance in the pit lane as approximately 310 metres. However, a post-event LIDAR scan requested by Alpine revealed the shortest viable racing line through the pit lane was 77 centimetres shorter than the official distance programmed into the timing system .

That gap was enough to make compliant laps look like violations. Gasly was flagged for exceeding the 60 km/h limit twice, judged to be over by just 0.1 km/h and 0.4 km/h on two separate pit entries, receiving two five-second time penalties that combined to drop him from third at the flag to seventh in the provisional classification . An Alpine telemetry review showed he had left a standard safety margin and had not actually broken the speed limit at any point. The stewards accepted this as “a significant and relevant new element” and unanimously rescinded the penalties .

Five drivers were penalised for pit-lane speeding in the same race: Gasly, Oscar Piastri, George Russell, Lewis Hamilton, and Alpine’s Franco Colapinto. All were processed by the same compromised timing loop .

How the appeals break down

McLaren and Red Bull: fighting the reinstatement

McLaren and Red Bull both exercised their right under Article 15.4 of the FIA’s International Sporting Code to notify their intention to appeal within one hour of the stewards’ decision . This does not constitute a formal appeal; it buys both teams a 96-hour window to examine the full stewards’ report and decide whether to proceed .

McLaren’s position is tied to Oscar Piastri. The Australian received a five-second penalty for the same infringement during the race and served it during a pit stop. McLaren's argument is procedural: if the evidence proves the speed measurement itself was faulty for all drivers, then every penalty from that session should logically be scrutinised together—not just the one that cost Alpine a podium .

Red Bull’s interest is more direct. Isack Hadjar had crossed the line fifth on the road but was elevated to a provisional third place after post-race penalties were applied to Gasly and others. The team cleared a separate, unrelated red-flag investigation into Hadjar’s own car that same night, and the Frenchman celebrated what appeared to be his first F1 podium . Gasly’s reinstatement bumped Hadjar down to fourth, stripping him of that result five days later .

Mercedes: legal action under consideration

Mercedes took no immediate procedural step but escalated the situation publicly. Toto Wolff said the team had been in contact with its legal department, asking the FIA to assess what “remedies” might exist for George Russell. Russell had been given a five-second penalty for pit-lane speeding, then received a drive-through penalty for failing to serve the original penalty correctly—a compounded sanction that dropped him to P12 and left him scoreless . Since the root cause was the same measurement error that exonerated Gasly, Wolff argued that Russell was unfairly penalised .

Williams: no evidence of participation

Published reports from race weekend covering the appeal process do not mention Williams filing any notice of appeal or taking an official position on the dispute, suggesting the team is not currently involved in the legal fight.

Drivers caught in the middle

The consequences hit three drivers with very different stakes.

Isack Hadjar is the most visibly affected. A Red Bull junior who earned his seat over the winter, Hadjar had survived a separate post-race hearing about possible red-flag work on his car and briefly held what would have been a landmark podium for his young career . Gasly’s reinstatement erased it. Hadjar said before the decision that he “wouldn’t be too disappointed” if the result was corrected, but the loss is significant for his championship standing and reputation .

Oscar Piastri sits at the centre of McLaren’s argument. The team is not asking for Piastri’s individual penalty to be reviewed in isolation—rather, it wants the entire classification to be adjusted consistently if the stewards accept that the timing data was invalid across the board . Piastri had earlier warned the FIA that “you can’t change the result” of a race that finished days earlier, a view now directly challenged by Alpine’s success .

George Russell suffered the most severe cascade. His drive-through penalty meant he lost more finishing positions than any other penalised driver, turning a potential points finish into a P12. Mercedes’ position is that if Gasly’s penalties are void because the measurement method was flawed, then the penalty sequence that ruined Russell’s race was built on the same invalid foundation .

What happens now and what’s at stake

McLaren and Red Bull have until the Tuesday after the following round at the Barcelona-Catalunya circuit to formalise their appeals . If either team proceeds, the case will go before the FIA’s International Court of Appeal—a step that could take weeks or months to conclude. A successful appeal could re-overturn the podium again or, more significantly, force the FIA to reopen every penalty that originated from the faulty Monaco timing loop. Alpine has indicated it will contest any appeal from its rivals .

The dispute has already damaged confidence in the sport’s stewarding infrastructure. F1’s timing provider, Formula One Management, supplied both the telemetry that triggered the penalties and the LIDAR evidence that proved them false—a conflict that several teams believe raises broader governance questions . For the moment, Gasly remains third in the official results, but his trophy sits on unsettled ground.