Williams has dropped its appeal against Felipe Massa's exclusion from the Brazilian Grand Prix.
Massa finished the race in eighth spot but was disqualified due to a temperature irregularity with his right-rear tyre, which was 27 degrees above the limit on the grid.
Williams says its data proves the team was in the right but opted against taking an appeal further as it has already secured third in the standings.
"Following detailed consideration the team has concluded that despite not agreeing with the exclusion and believing it has sufficient evidence with which to successfully contest the ruling, it will not formally appeal the decision as a hearing date is unlikely to be available until after the end of the season impacting a time when the team wishes to turn its attention to its 2016 campaign," read a Williams statement.
"Given the financial climate of the sport, and the fact that the decision does not impact the team's Constructors' Championship position, it has been decided that this would be an unnecessary cost to endure."