David Coulthard slams Hungarian GP blue-flag errors as ‘nursery school’ mistakes. David Coulthard calls Hungarian GP blue-flag errors unacceptable.

David Coulthard has strongly criticised the drivers and teams involved in the Hungarian Grand Prix blue-flag errors, rejecting excuses related to the system malfunction at the Hungaroring. The former McLaren driver described their response as comparable to a “first day at nursery school” and argued that race engineers should still have been able to monitor approaching cars from the pit wall.

The failure caused several controversial incidents during the 2026 Hungarian Grand Prix, creating traffic for the leading drivers and contributing to contact between Oscar Piastri and Carlos Sainz.

Hungarian GP blue-flag errors disrupt traffic at the Hungaroring

Under Formula 1 regulations, blue flags instruct a driver who is about to be lapped to allow a faster car through. The warning normally appears on the steering wheel, but that system malfunctioned during the race in Budapest.

Drivers therefore had to depend on the light panels around the circuit, the physical blue flags displayed by marshals and information communicated by their race engineers. It was this final part of the process that proved particularly ineffective.

Mercedes team principal Toto Wolff described the drivers involved as “Teletubbies” after becoming frustrated by the traffic. The delays prevented Kimi Antonelli from closing the gap while attempting to challenge Max Verstappen for second place.

Oscar Piastri and Carlos Sainz collide amid blue-flag confusion

The most obvious incident involved Oscar Piastri and Carlos Sainz. The Williams driver failed to notice the approaching McLaren and made contact with the number 81 car.

Carlos Sainz later blamed the blue-flag problem for the collision in a social media post, although his account was contradicted by the footage. The Spanish driver also did not apologise to Oscar Piastri.

The McLaren driver was angered by the contact, although Andrea Stella subsequently offered a more measured assessment of the incident and Carlos Sainz’s responsibility for the clash. David Coulthard was far less forgiving when considering that collision and the other blue-flag incidents that occurred during the race.

David Coulthard brands Hungary mistakes unacceptable

Speaking on the Up to Speed podcast, the Scottish former Formula 1 driver criticised both the competitors and their teams for failing to manage the problem more effectively. David Coulthard maintained that engineers should have known where their drivers were on the circuit by observing the track from the pit wall.

The 13-time Grand Prix winner described the incidents as “first-day-at-school mistakes—and I genuinely mean nursery school, judging by how the drivers were reacting to the blue flags.”

“Now, Toto sits a long way back in the garage, but in the past the engineers used to look over the pit wall and had a solid understanding of where the other cars were,” David Coulthard continued.

“You cannot rely on that during qualifying or when cars are leaving the pit lane, but during a race, when the cars are circulating continuously, it is always possible to keep track. The fact that this was not done well enough in Budapest is simply unacceptable.”