Carlos Sainz has blamed a problem with the blue-flag system for his controversial collision with Oscar Piastri during the Hungarian Grand Prix, but onboard footage shared after the race appeared to contradict his explanation. The Williams driver made contact with Oscar Piastri while the McLaren driver, who was leading the race at the time, was attempting to lap him.
The Carlos Sainz-Oscar Piastri clash was arguably the most contentious incident of a dramatic race at the Hungaroring. Oscar Piastri strongly criticised Carlos Sainz during his post-race interviews, while McLaren team principal Andrea Stella adopted a more conciliatory position following McLaren’s eventful Hungarian Grand Prix.
Carlos Sainz explains Oscar Piastri clash without apology
Carlos Sainz subsequently addressed the incident on social media, but his post generated further controversy rather than calming the situation. The Spaniard did not apologise to Oscar Piastri, as drivers often do when publishing statements of this kind, and instead attributed the collision to an alleged malfunction involving the light panels normally used to display blue flags.
“I had a great race, but there was a problem with the blue-flag system: Oscar appeared in my blind spot while I was fighting Fernando and we made contact,” Carlos Sainz wrote. “I then lost ground because of the penalty and the double overtake during the VSC period. We have a lot to work on, but we will come back stronger!”
The explanation prompted a wave of criticism on social media, particularly because footage from Carlos Sainz’s onboard camera appeared to offer a different version of events.
Onboard footage challenges Carlos Sainz’s blue-flag claim
Numerous users published videos showing Carlos Sainz’s onboard footage from the laps surrounding the collision. The images appeared to show that blue flags had already been displayed to the Williams driver on the lap before the contact and that the light panels were operating normally.
Carlos Sainz had also been warned over the radio that Oscar Piastri was approaching. The incident ultimately contributed to the disappearance of McLaren’s hopes of securing a one-two finish, although Lando Norris still claimed his first Hungarian Grand Prix victory.
Why Carlos Sainz received only a five-second penalty
The stewards imposed a five-second time penalty on the former Ferrari driver. In their official decision, they identified Carlos Sainz’s restricted view of the approaching McLaren as the only mitigating circumstance.
“At the time of the incident, the position of Car 55 relative to the circuit and the other cars meant that Car 81 was not visible to the driver of Car 55 before the overtaking attempt. Although the driver had been informed that Car 81 was approaching, the stewards recognised that the limited visibility reduced the degree of fault.”
That assessment explains why Carlos Sainz received a five-second penalty rather than a ten-second sanction. The contact nevertheless proved highly consequential for Oscar Piastri and became one of the principal talking points from the final 2026 Hungarian Grand Prix classification.
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