Ok, the live text commentary boffins are going to take five (well, more like 50).

We'll be back with you at 07:00 BST for the build-up to the qualifying hour, where Lewis Hamilton looks every inch the man to beat.

We'll see you then.

Read Andrew Benson's final practice report.

So, a quick look at the top five at the end of final practice.

1. Lewis Hamilton (Mercedes) 1:37.615

2. Nico Rosberg (Mercedes) 1:37.841

3. Sebastian Vettel (Ferrari) 1:38.313

4. Kimi Raikkonen (Ferrari) 1:38.512

5. Daniel Ricciardo (Red Bull) 1:39.020

Image source, AFP

Former Cosworth boss Mark Gallagher tells BBC Sport: "If Red Bull bothered to go up the road, they'd find a company capable of making a competitive engine."

For the record, Cosworth are based in Northampton... 20 miles up the road from Red Bull's Milton Keynes headquarters.

Image source, Getty Images

Another blow for Red Bull-Renault relations.

Daniil Kvyat reports a loss of power and trundles back to the pits.

Jolyon Palmer on Twitter: had a nice chat with Lee McKenzie for BBC

Yes you did, Jolyon. And it's available to watch right here (UK users only)

Image source, Jolyon Palmer

Farid Kipirash: Alonso's patience ran out at the worst possible time. Now Vettel looks pretty good in that red car.

Michael T: If Alonso was at Ferrari that car wouldn't be the same. The setup on Ferrari wouldn't suit Alonso so it would've been developed differently

Mark Fullerton: Alonso's woes..He would be about the same as Vettel.. Not #1 in standing so might as well be developing the McHonda

Andrew Benson
Chief F1 writer

"Lewis Hamilton has always loved the Shanghai track. Its unique demands make the front tyres the most heavily worked, which in turns means it is necessary to set the car up to protect them, and therefore with a slightly oversteery balance - which, as it happens, is how he likes to drive.

"It was no surprise, then, that Hamilton looked fantastic on track in his Mercedes in China on Friday, and appeared streets ahead not only of every other team, but also his own team-mate Nico Rosberg.

"There was even a hint of his cast-iron confidence that he is the better driver at Mercedes when he said: 'It is quite close between us and Ferrari and Nico is quite quick as well.' On a track on which he has won more times than anyone else, few would bet against Hamilton maintaining that form."

Image source, AFP

Manor F1 on Twitter: Roberto's 'lucky egg' equivalent - getting in the cockpit from the left.

Image source, Manor F1

The soft tyres are going on the cars now and the times are coming down accordingly.

Red Bull's Daniil Kvyat was first to change to the yellow-walled soft and briefly went quickest, but the Mercedes followed suit and restored the order at the summit.

Nico Rosberg vaulted to the top of the order with a 1:37.841, but team-mate Lewis Hamilton has just lowered the mark again with a lap two tenths quicker.

Andrew Benson
Chief F1 writer

"As Fernando Alonso sits in the McLaren garage watching the mechanics trying to work out what made his engine stop after two corners of his out lap, it's hard to avoid an uncomfortable thought about Honda's return to F1.

"They clearly were not ready to race at the start of this season. So you have to ask a couple of awkward questions: 1) why did they not delay their debut by a year, given that they only started working on the engine in 2013, and did they underestimate the task? 2) Why on earth did they not stick the engine in the back of a Formula Nippon car (or even a three-year-old F1 car) and pound round and round Suzuka, which Honda owns, until it was sorted?"

Mercedes on Twitter: Latest track and air: 23C, 33C. That sounds more like it

Andrew Benson
Chief F1 writer

"Friday was a much better day for Red Bull, who have endured a sobering start to the season. A poor first race, and an even worse second one have led to team owner Dietrich Mateschitz to threaten (again) to quit F1 if Renault cannot produce a competitive engine.

Image source, Getty Images

"It's not all Renault's fault, though. Chief engineer Paul Monaghan admitted on Friday that the Red Bull car "probably lacks a bit of downforce". Which must be the first time that could be said for six years. Quite why is not completely clear - Adrian Newey was still very heavily involved in the 2015 car despite the much-vaunted 'stepping back' into an advisory role.

"Anyway, Daniel Ricciardo set a decent-looking one-lap pace, and was right with the Ferraris on the long runs, too. A challenge for the podium looks on the cards."

Brake problems for Daniel Ricciardo it seems.

His car has just been wheeled back into the Red Bull garage with smoke pouring from his rear tyres, the BBC's Tom Clarkson reports.

The Australian is currently sitting in ninth place, 1.343secs off the quickest time.

Lewis Hamilton has been on the radio to complain about his seat getting over-heated.

Hamilton's seat was pictured earlier in the week with a gold heat-reflective panel on one side, to protect the driver from heat coming from the car's Ers system.

We've just seen Hamilton's spare seat being put into his car. Handily, the BBC's very own Tom Clarkson snapped a picture of that very same spare seat yesterday.

Image source, Tom Clarkson

Image source, EPA

Whatever the problem was with Jenson Button's McLaren, it seems to be fixed now.

The Briton has got back out on the track and has pumped in a time just a shade under two seconds off the benchmark set by Lewis Hamilton, good for ninth.

Here's a stat for you, stat fans.

The driver topping FP3 only took pole seven times in 19 rounds in 2014.

So, whatever happens over the remaining 35 minutes or so is not necessarily going to be a guide to qualifying later today.

1. Lewis Hamilton (Mercedes) 1:39.776

2. Nico Rosberg (Mercedes) +0.279

3. Sebastian Vettel (Ferrari) +0.399