Nico Hulkenberg has admitted that securing his future for 2017 and beyond may be translating into a performance boost.
While Sergio Perez is the home town hero, it’s German Hulkenberg who is the on-form Force India driver in Mexico as he qualified ahead of the Ferraris.
He was also strong in Austin, after Perez looked the better driver earlier in 2016.
Has the switch to the works Renault team given Hulkenberg a mental boost?
"Everyone asks me about it," the 29-year-old is quoted by Auto Motor und Sport. "Perhaps there is something deep inside of me.
"But I’ve known for some time that my future is secured for next year," he added.
However, Hulkenberg also knows that the psychological side to sporting performance is important.
"I already realised it last year with Le Mans," he said, "and how positive events can give you a small boost. If you’re happier then maybe you’re a little faster.
"On the other hand, I also have to say that at the end of the season I understand the car and the setup more, so it’s probably a combination of factors," Hulkenberg said.