Felipe Massa is confident that he would have finished in the top 10 at Barcelona had it not been for what he believes was an unnecessary drive-through penalty.
The Ferrari driver was forced to take an unscheduled tour through the pitlane on lap 28, a penalty for ignoring yellow flags.
The delay meant that 15th place was the best he could manage, with Massa later admitting that he was unsure why he was penalised.
"Honestly, I don't think I did anything wrong and I believe it is better to look into the detail of what happened, because I was in the middle of a group of cars and I definitely did not try to overtake anyone," said the Brazilian.
"It's a real shame, because up until then, the race was going well for me and a place in the top 10 was comfortably within my reach. I was in the group with the Red Bulls and the McLarens and I could match their pace."
With his team-mate Fernando Alonso finishing second, Massa is confident that Ferrari is now getting to grips with its 2012 challenger.
"I am happy that Fernando was able to fight for the win all the way to the end, as it shows our car's potential has definitely improved. We still don't have the quickest car, but it seems we are going down the right road."