Perez qualified only fifteenth but aims to put on a show for his Mexican fans.
"We have lost a lot of performance compared to this morning’s practice session and at the moment we don’t really know why. The track temperature increased a lot, but for me the tyre warm up still wasn’t any better. My car tended to oversteer quite a lot in qualifying. Perhaps we did not follow the way the track conditions developed in the right direction", he said.
"I want to thank all the people in the grandstands and especially all the Mexicans, who sacrificed time and money to travel to Austin and bought tickets. In my country you always go with your entire family and I know this is not easy to do because it is an expensive trip. I wish I could have done better today, but I will do my very best to give all these people a good race tomorrow. For sure I will fight for points however difficult this might be".