After two years of finishing second to Lewis Hamilton, Rosberg finally took the championship in the season finale - incidentally finishing second to Hamilton in the race.
"Racing against the most talented driver as a team mate and winning a world championship and making it close the years before it quite an achievement, and I think we should honour that, because he is a tough cookie and he doesn’t let go," Wolff said of Rosberg. "There is quite some remarkable character traits about him that make him a World Champion and a worthy World Champion."
However, he appeared to hit out at Hamilton who blamed mechanical failures for him missing out on the championship.
"You need to win and to lose with dignity," said Wolff. "This is a mechanical sport. If they sat on the floor on the starting grid they wouldn’t go far. This team has built them the best car over the last three years and has made them win races and championships. This team has let them down on occasions – less occasions letting them down than the ones they can celebrate. This year, clearly Malaysia cost him the championship. It’s clear."
Bahrain International Circuit - Winter testing