Silver Arrows speedy Rosberg, who started on pole, took the chequered flag with a perfect drive to make it three race victories in a row and six for 2015.
Lewis Hamilton also claimed the F-LAP of the race on lap 44. Kimi Raikkonen was third ahead Ferrari team-mate Sebastian Vettel.
Force India of Sergio Perez with Daniel Ricciardo sixth for Red Bull in the day-night race.
Force India’s Nico Hulkenberg was seventh, Williams driver Felipe Massa eighth and Lotus’ Romain Grosjean ninth. Daniil Kvyat completed the top 10 for Red Bull.
Sky Sports, asked — Why didn’t Hamilton get supersofts for the final stint? Niki Lauda explains:
“He decided himself. I was listening closely. There were too many laps to go and he was worried he wouldn’t finish,” says Lauda… more to follow