Reliability must not define title - Wolff
Toto Wolff says he would take no joy from seeing one of his Mercedes drivers win the world championship if it came as a result of the other retiring with a reliability issue.
Rosberg's retirement in Singapore - his second of the season after Great Britain - allowed Lewis Hamilton to overtake him in the championship fight after victory. Hamilton himself had been playing catch-up for much of the year after retirements of his own in Australia, Canada and Belgium.
Mercedes boss Wolff is adamant the team cannot continue to let its drivers down with reliability issues.
"That would obviously be something which would not be satisfying at all," Wolff said. "We don't want to have a spin in there that the championship was decided because one car let the driver down. We need to re-focus and get our heads down, keep concentrating and find out what we can do and what the utmost is we can do to prevent DNFs, reliability problems."
Wolff echoes the sentiments of Rosberg that Mercedes needs to work on its reliability before the end of the year, and says he would happily suffer more physical injury - a reference to the broken arm sustained in a bike accident earlier this year - if it led to a solution.
"If I could or we could make anything to stop the DNFs we would do it. I would break my arm again to stop the reliability issues, we just have to get on top of it. We have a great reliability team, we have a great group really dedicated to quality. So considering that fact it's even more astonishing we are having those issues. They need to get a grip, but this takes time. It's unacceptable for us, I think it's four of them now."