Unlike in recent races when it was the Pirellis that cost Haas race-pace, this time around in Singapore it was a plastic bag that thwarted Kevin Magnussen.
Magnussen was running inside the top ten for much of the Singapore Grand Prix with Haas chasing their first points since July’s German GP.
However, as the race restarted after the third Safety Car the Dane suddenly began to lose pace and was picked off one by one by his rivals.
Magnussen eventually pitted with three laps to go, which initially appeared to be a tyre call, however, team boss Guenther Steiner says it was mainly to remove a plastic bag that had become caught on his wing and which was responsible for the loss of pace.
Steiner explained to Motorsport.com: “It was after the [final] restart, when he all of a sudden got slower.
“He drove by a few times and we checked [the wing] because one of the engineers said we can see a loss of front downforce, and we thought the wing was broken.
“But Kevin said he didn’t hit anything, and you could not see it when he was driving by as the wing was up.
“That is why we made a pit stop, as he lost so much downforce, so he came in and we put new tyres on and took the bag out.
“The tyres were going, so there was no point to stay out there.
“At least with a new set of tyres we can put a nice lap in and we see what it is. We got the bag.”
Magnussen finished a disappointing P17.
“It didn’t help,” Steiner replied when asked if the bag had cost the Dane points.
“You start to think that the front wing is broke and you lose downforce, and then the car doesn’t work any more.
“Would we have been able without the bag to keep the tyres alive? I don’t know.”