Jenson Button was left utterly baffled by his McLaren's lack of speed in Abu Dhabi Grand Prix qualifying.
While his teammate Lewis Hamilton blasted to a dominant pole position, Button was 0.66 second slower in sixth place. He had only been 10th and ninth in Q1 and Q2, respectively.
"All weekend I've been happy and the pace has been good," Button said. "But in qualifying it wasn't there and I don't know why. If I knew, I would've sorted it out, so I don't know.
"Obviously the car is very quick – Lewis is on pole by quite a bit. I'm five or six tenths off. It's a lot of lap time."
Asked what exactly he was struggling with, Button replied: "Lots. Understeer on turn-in. Traction very poor. Locking up fronts and rears. So there's lots that wasn't working."
Although he had been confident about his long-run pace in practice, Button was not sure whether that would be sufficient to make up ground.
"On Friday the car was working well on high fuel and we had the quickest long run, so hopefully we can put that to good use," he said. "But it's going to be difficult."