Ben Edwards
BBC F1 commentator

"It's looking tough for Nico now to get the top five."

Nico Rosberg: "How am I looking for that position I need in case Lewis drops out?"

Race engineer: "It's not good at the moment."

Nico Rosberg: "What the hell does that mean? What can I do?"

Race engineer: "Just drive flat out, Nico."

Nigel Mansell:, external For all of us race fans it's so frustrating to have car problems in any race least of all this final race, so disappointing for Nico.

The end of this race is in sight and suddenly Felipe Massa is in with more than a sniff of victory. His lead over Lewis Hamilton is just under 16 seconds, although the Brazilian has a pit stop to come.

Even when that stop happens, it's going to be mighty close between the pair, with Massa set to be on much fresher tyres. Don't forget these two fought for the title in 2008, with Hamilton snatching it at the death in Brazil.

Here's the top 10: 1) Mas 2) Ham 3) Ric 4) Bot 5) Per 6) Hul 7) Ros 8) Vet 9) But 10 Alo

Jeremiah Kariuki:, external Seems Lewis problem is sorted out, but shame Nico's is not. Shame we won't be entertained by wheel to wheel racing between the two.

Dave Green:, external I'm not sure Rosberg would be in with a chance of winning this race even with a fully functional car. Lewis has the pace, clearly.

Mercedes:, external To confirm - Nico Rosberg has lost ERS. No hybrid power and battling turbo lag. Doing a heroic job to even keep the car running.

Tense scenes in the Mercedes motorhome, with Anthony Hamilton and non-executive chairman Niki Lauda following the action on TV.

Lewis Hamilton trails race leader Felipe Massa by 15 seconds with 19 laps remaining.

Nico Rosberg pits and rejoins in seventh, behind the Force Indias of Sergio Perez and Nico Hulkenberg.

James Allen
BBC Radio 5 live commentator

Image source, Getty Images

"As long as Rosberg finishes in the top five, if Hamilton retires then Rosberg could still be world champion."

Lewis Hamilton says he needs to pick up his pace. "Tell me what I have to do," he adds. His engineer replies: "Low 1m47s." That's exactly what he delivers on the next lap. Hamilton wants to win this race - he isn't interested in second.

Force India:, external Checo looks in his mirrors and he can see the biggest smile in F1 closing on him. Battling with RIC for P5 now!

David Coulthard
BBC F1 co-commentator

"Surely Mercedes want to win the last Grand Prix of the season. They are in it not only for technical reasons but marketing too."

Nico Rosberg: "Just get me in the top five or six."

Ben Edwards
BBC F1 commentator

"Mercedes are hunting a record 16th win of the season."

Image source, AFP

There is every chance that Felipe Massa is going to win the grand prix. The Brazilian, who has not won a race since the 2008 Brazilian Grand Prix, leads Lewis Hamilton by 15.1 seconds - and still has to pit.

Meanwhile, Valtteri Bottas passes the stricken Mercedes of Nico Rosberg for third.

Image source, Getty Images

Lewis Hamilton passes Nico Rosberg for second without any problems. The team have turned Hamilton's engine down, probably as a precaution following Rosberg's problem, which explains why Hamilton's pace has dropped off.

Tom Clarkson
BBC F1 pit-lane reporter

In the Mercedes garage: "Both drivers are using power units on only their third race weekend. They are not long in the tooth. We don't know if Lewis has a problem but if he does that will be disappointing for Mercedes who tried to guarantee reliability."

Lewis Hamilton pits from the race leader. His brother Nicholas is out of the garage, arms folded while watching the stop take place. It's decent, but not spectacular and he's soon on his way.

David Coulthard
BBC F1 co-commentator

"Has there been an issue with Lewis? He's losing a lot of time. Massa is hunting down Hamilton."

Lewis Hamilton is losing a bunch of time! Felipe Massa is hunting down the race leader! The gap is down to nine seconds! The Brazilian just took two seconds out of Hamilton on that last lap.