Sebastian Vettel accepted that he and Ferrari made a misjudgement after a shock exit from the first part of qualifying for the Abu Dhabi Grand Prix.
Vettel had set a time on Prime tyres which he and the outfit believed would be sufficient to progress into Q2, but Option-shod rivals improved their times and demoted the German racer to 16th place.
"Nothing wrong with the car, we thought that the lap I had on the Soft (Prime) tyres was quick enough, but in the end it was not," he said.
"There was also a car in front which shouldn’t have been there. So we misjudged the situation, a small mistake with big consequence, but the race is tomorrow and lots can happen."
Team-mate Kimi Raikkonen was able to salvage third position for Ferrari in the other SF15-T.
"It has been a nice Saturday, my car has been feeling pretty good the whole day," he explained.
"This morning I only struggled on some laps, but overall the behavior was the way I wanted and when it’s like that it’s a lot easier to put the lap together.
"The Mercedes have been very quick today and yesterday, in the lap times they are a bit faster than us, but the race is tomorrow, so let’s see. I did my maximum today."