Toto Wolff says Mercedes will cover "every little detail" of its recent reliability problems to prevent a repeat in the final races of 2015.
Mercedes' once-immaculate reliability record has been shattered since the summer break, with three retirements since the Italian Grand Prix. Two of those have been in the last three races, with the most recent for Nico Rosberg in Russia all but ending his hopes of challenging team-mate Lewis Hamilton for the drivers' championship.
Though Mercedes secured the constructors' championship in Sochi team boss Wolff is not happy with the team's recent run, especially as Rosberg has now dropped behind Ferrari's Sebastian Vettel in the championship.
"It's been a proud week for everybody in Brackley, Brixworth and Stuttgart," Wolff said. "We can talk about chassis and power units winning titles. But really it's about people - and every one of those men and women is a deserved World Champion. We now have four races left to make sure our 2015 objectives are complete, with the drivers' title still on the line. Lewis is now within touching distance - but I know that his focus is only on winning the next race.
"For Nico, bad luck has played a big part this year and it would be a huge mountain to climb. But he is a fighter and we have seen many times that he will keep pushing until the very end. Of course, there is still a third party in the mix and we, as a team, must make absolutely sure that our drivers have everything they need to make sure it's a Silver Arrow that comes out on top. Two retirements from the last three races is not up to our standards and we must ensure that every little detail is covered to give them that opportunity."
Hamilton will secure a second straight drivers title at the United States Grand Prix if he leads a Mercedes one-two for the second year in a row.