Jenson Button was left frustrated with qualifying for the European Grand Prix after only managing sixth on the grid in Valencia.
The McLaren driver was unable to match the pace of team-mate Lewis Hamilton during the vital final stage of the session and was only able to secure a place on the third row of the grid as a result.
While that is still a position from which the Briton can challenge for victory – as he showed with his run from the back of the field to the front in Canada – Button admitted he was disappointed at not qualifying higher up the order.
“Sixth position is a bit frustrating because the car felt pretty good in Q2, and I didn't have to push it too much,” he said. “So I don't know why that changed for Q3. I had quite a bit of oversteer and I couldn't get enough rear grip or traction, particularly in the first two sectors. And that was something I wasn't expecting.
“The car felt really good this morning in practice, though. Maybe in this heat, the balance didn't work quite as well as it did this morning due to the higher track temperatures. It was the same with the Prime tyre: a bit more oversteer than there was this morning.
“Still, I'm sure we can change the tyre pressures and aero balance for tomorrow, so we can still have a good race.”