Fernando Alonso says that McLaren's performance during the Belgian Grand Prix was 'painful' as it finished significantly adrift of the top 10 at Spa Francorchamps.
McLaren struggled throughout the weekend, leaving Alonso and team-mate Jenson Button to start from the back row of the grid after a litany of engine penalties.
Alonso made a strong start but was unable to keep pace with the remainder of the pack as he came home a lowly 13th.
"That was a tough race and a painful weekend: we simply weren’t competitive today," he said. "My only fun came at the start – to start 20th and be 14th at the end of the first lap was a good feeling.
"After that, our overall pace wasn’t good enough, but at least we got both cars to the finish, so hopefully we can learn a bit for the next race."
Button came in 14th but was restricted by a lack of power.
"From the early laps, I had a problem with the deployment from the ERS pack," he said.
"I’d get deployment from it in different places now and again, but it was never really deploying and recovering as it should. It would cut immediately after Raidillon, for example, and then I’d have to rely on the ICE alone.
"That’s a lot of power to lose, and it meant I was driving the Kemmel Straight and the straight up to Blanchimont without any deployment at all. You can’t really do much in that situation."