Force India team principal Vijay Mallya says the team must perform at the top of their game in the final two races of the season as they fight over fourth place in the championship, with every point potentially decisive in their battle with Williams.
The Silverstone-based team have gradually improved on their Constructors' Championship position with each passing season, having finished sixth in 2014 and then fifth in 2015.
The team are currently nine points clear of Williams in fourth with just two races left on the calendar, meaning the smallest of errors could cost them the points needed to remain ahead.
Mallya is however confident they can finish the season on a high: "Our strong showing in Mexico proved how competitive we are at the moment and gives us further encouragement for this weekend’s race in Sao Paulo.
"We’ve had some good memories from Brazil over the years and it’s a circuit that has staged some special races – often helped by wet weather.
"It’s a very important weekend for us as we reach crunch time in our battle for fourth place in the championship.
"With two races to go and a nine-point advantage, every point becomes potentially decisive. We need to be at the top of our game to ensure we finish the job we have done so well all year."