Mercedes' George Russell won the Singapore Grand Prix on Sunday ahead of Max Verstappen and Lando Norris, as McLaren clinched the Formula One constructors' championship.

Oscar Piastri was fourth, meaning his lead over McLaren teammate Norris at the top of the drivers' standings was cut to 22 points.

The 27 points scored by Piastri and Norris were more than enough for McLaren to equal the record set by Red Bull in 2023 by winning the team title with six races to spare.

It was McLaren's second title in a row and 10th in the team's history, and was won despite their two drivers clashing in the opening turns with sparks flying as Norris got the better of Piastri.

"They have driven brilliantly all season. You can't win the constructors' without two awesome racing drivers," said McLaren CEO Zak Brown.

"As you can see, we are letting them race. They race hard, they race clean, they race to win."

Russell was overjoyed to win the night race for the first time, saying it was payback for his final-lap crash two years ago while pushing for victory on the Marina Bay Street Circuit.

"It feels amazing, especially after what happened a couple of years ago. That was a bit of a missed opportunity, but we more than made up for it today," said the Englishman, who started on pole.

"We don't really know where this performance came from, but really, really happy.

"I mean, a one hour, 45-minute race here in Singapore, with the heat and humidity, is never smooth and straightforward.

"But pulling out a 10-second gap in 20 laps was really great. And from that moment on it was bring it home."

Dutchman Verstappen was relieved to finish second for Red Bull.

"I think the whole race was quite difficult, more difficult than I hoped for, for a lot of different reasons," said the four-time world champion, who remains third in the title race, 63 points behind Australia's Piastri.

"There's a few things that we need to understand why they went wrong today," he added. "But around here even if you have more pace, you can't pass without anything crazy happening. So I think second was the maximum result." (AFP)