Sergio Perez says he doesn’t fear an improving Mercedes as he believes he has more potential to show himself at this weekend’s Mexico City Grand Prix.

Lewis Hamilton briefly moved to within 19 points of Perez in the drivers’ championship after finishing second in Austin on Sunday, before being disqualified for a technical infringement. That leaves the gap at 39 points after Perez was promoted to fourth place, but despite Hamilton having outscored him over the previous three race weekends the Mexican insists he isn’t feeling any pressure from the battle for second place overall.