Mercedes boss Toto Wolff has admitted that Mercedes' reliability has not been up to standard, following a sequence of retirements for Lewis Hamilton and Nico Rosberg since the summer break.
Rosberg was forced to retire in Italy and Russia due to mechanical woes, while Hamilton was unable to finish in Singapore.
Mercedes had beforehand enjoyed strong reliability in 2015, having claimed nine double-podium finishes across the start of the season.
"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," Wolff said ahead of the United States Grand Prix.
"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."
Wolff is sure that Hamilton will remain focused despite being able to clinch his third title this weekend.
"Lewis is now within touching distance - but I know that his focus is only on winning the next race," he said.
"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."