F1 Launches Investigation Into Software Glitch That Turned Rain-Hit Bahrain GP Start Into 'Lego Race'

Formula One's governing body has pledged a thorough investigation into a software defect that disrupted the opening stages of the Bahrain Grand Prix in Sepang, Malaysia, leaving several drivers struggling to keep their cars moving and forcing the aborted start to be delayed further.

The FIA confirmed that a technical fault struck during the formation lap on Sunday after heavy rain had already pushed back the race at the hot and humid Sepang International Circuit. The glitch affected a number of cars, including those of Ferrari's Lewis Hamilton and Red Bull's Max Verstappen, who went on to win the rain-delayed event.

For Hamilton, a seven-time world champion and the most decorated driver in the sport's history, the incident produced a moment he said he had never experienced before: he was forced to stop his car on the track and restart it. Verstappen, a four-time champion, offered a more colourful description, comparing the experience to a "Lego race" that had been staged at Silverstone before the British Grand Prix.

The chaos came as the latest setback in what has been a troubled first season for Formula One's new generation of cars and power units. Since the opening race of the year, drivers have voiced frustration with the increased electrical component of the engines and the growing demands of energy management, which they feel has changed the character of the racing.

In a statement issued after the race, the FIA explained that an unusual set of circumstances had combined to cause the failure. It cited "an unprecedented combination of low engine speed, low-grip conditions, wet-weather energy management settings and the Sepang circuit's sector configuration," which together produced what it described as an unintended loss of power for several cars.

The governing body said its technical department responded by removing the energy limit constraint in the affected sectors through an updated software release, which was distributed to all competitors while the race was delayed by the heavy rain. That update allowed teams to make the necessary adjustments to their power units before the start of the race.

According to the FIA, the problem had gone undetected by both the governing body and the teams during testing and on the laps to the grid. The organisation confirmed it would carry out a full review of the issue together with the teams and power unit manufacturers.

The FIA's single-seater director, Nikolas Tombazis, addressed reporters after the race and pointed to a lack of pre-season running in wet conditions as a contributing factor. He described how some cars slowed dramatically, almost coming to a complete halt, creating a concertina effect through the field.

Tombazis explained that the bug prevented power from being redeployed, which in turn made it difficult for the affected cars to get going again. He acknowledged that more wet-weather testing would likely have allowed the problem to be identified earlier, avoiding the disorder that unfolded on the formation lap.

Sepang marked the first race weekend of the season to feature wet conditions, although the track ultimately dried out over the course of the race. That timing meant teams and officials had no prior opportunity in 2026 to gather data on how the new power units behaved in the rain.

Tombazis struck a pragmatic tone about the episode, saying that sometimes issues slip through the net and that the sport learns from such experiences to perform better in the future. His comments suggested the FIA views the incident as a valuable, if embarrassing, lesson rather than a fundamental design flaw.

The formation-lap failure raises broader questions about the current regulatory era, in which electrical power and energy management play a far greater role than in previous generations of Formula One machinery. Drivers have repeatedly argued that the need to manage energy can make the cars unpredictable and detract from flat-out competition.

The aborted start also placed additional strain on race control and the teams, who had already been dealing with a long weather delay at one of the calendar's most physically demanding venues. Restarting the procedure required swift coordination and an emergency software fix delivered in the middle of the postponement.

Verstappen's eventual victory in Sepang came after the race finally got under way, but the Dutchman's "Lego race" remark underlined how unusual the cars felt to drive during the glitch. His comparison referenced a light-hearted event held at Silverstone before the British Grand Prix, where drivers piloted toy-style cars.

The FIA's promised review will now examine how the software behaved, why testing failed to expose the flaw, and what changes may be needed to prevent a repeat. The findings could influence both the sport's approach to wet-weather preparation and the ongoing debate over the balance between electrical and combustion power.

For Hamilton, the incident added another strange chapter to a season already marked by adaptation to a new team and a new technical formula. Having to bring his car to a stop and fire it up again mid-formation was, by his own account, a first in a long and distinguished career.

The governing body's decision to distribute an updated software release during the rain delay demonstrated the kind of rapid intervention that modern Formula One requires, but it also highlighted the sport's growing dependence on complex electronic systems. When those systems falter, the consequences can ripple across the entire field within moments.

As the season continues, teams and power unit manufacturers will be expected to cooperate fully with the FIA's investigation. The outcome will shape how the sport prepares for future wet weekends and could prompt changes to testing procedures designed to catch such faults before they reach the track.

For now, the Bahrain Grand Prix will be remembered not only for Verstappen's win in Malaysia but also for a formation lap that briefly turned the pinnacle of motorsport into something closer to a toy-car procession. The FIA's full review will determine whether that comparison remains an amusing anecdote or becomes a warning about the new era's vulnerabilities.