Daniil Kvyat says his chances of claiming a strong finish at the Abu Dhab Grand Prix were hindered by an electrical problem in his Red Bull RB11.
Kvyat was challenging Force India driver Nico Hulkenberg for seventh spot but his car overheated, affecting the performance and causing the Russian driver to slip back to 10th.
"It was good that we managed to finish and I was happy with my pace in the first half of the race," he said.
"So, up until about midway, it looked as though we could have had a really strong race, as I was controlling [Felipe] Massa and attacking Hulkenberg, but then we had electronic issues and we had to give up the fight in a way.
"From then on we were losing a lot of time on the straight. Almost every lap we had to do something about our electronic issues, so under the circumstances, we did absolutely the best job we could today and I'm happy about that."