Mark Webber admitted he was unsure what we behind his lack of pace during the German Grand Prix at Hockenheim.
The Red Bull driver had qualified third on the grid in a wet qualifying session before a five place penalty was taken into account for a gearbox change.
That left Webber eighth on the grid for the race but he failed to make any forward progress when the race got underway and finished in the same position he had started, admitting afterwards that he just didn't have the pace to move up higher.
“I had no pace today and wasn't quick,” he said. “I couldn't stay with people that I normally can, so we'll look into it and come back in Budapest. I'm disappointed, as I expected to get more out of today's race. Normally Sundays have been ok for me, but not today.
“After the first lap it wasn't too bad, I got Lewis, but after that I was just hanging on. This is a completely different track to Silverstone, but we have to be quick in all conditions and today we weren't for whatever reason.”
Team boss Christian Horner admitted that lost track time due to the conditions on Friday hadn't helped the Australian.
“Mark's afternoon was always compromised by the gearbox penalty he had yesterday,” he said. “We were aggressive at the first stop; it didn't work out as we hoped and he seemed to struggle a bit with the long run pace on the harder tyre today with Mark. I think that possibly the lack of running on Friday and key set-up time cost us there.”