New quad-turbo diesel engine will get its first outing in a performance version of the new 7 Series next year
31 July 2015

BMW is putting the finishing touches to a new quad-turbocharged, in-line six-cylinder diesel engine for use in a number of high-end models, sources close to the German car maker have revealed

The new performance-orientated oil-burner is planned to get its first airing in a newly created 7 Series M750d model planned for launch in 2016. 

Set to replace BMW’s existing tri-turbocharged diesel, the new quad-turbocharged engine is claimed to boast a capacity of 3.0 litres and develop well over 400bhp and 590lb ft. 

Details remain scarce, although sources suggest the new engine could build on the tri-turbo unit used in the M550d and X5 xDrive50d M-Performance by adding a small electrically driven turbocharger to increase low-end boost pressure and provide added punch. 

Alternatively, BMW could improve induction qualities by using a fourth conventional gas-driven turbocharger.

The existing tri-turbocharged unit develops 376bhp at 4000rpm and 545lb ft at a relatively high (by diesel standards) 2000rpm. 

As well as being earmarked for the new M750d, the quad-turbocharged diesel is also set to appear in four-wheel-drive M Performance derivatives of the X5 xDrive50d, X6 xDrive50d, and X7 xDrive50d.

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Comments
15

31 July 2015
"Look at me, I've got considerably more turbochargers than yow."

 

I'm a disillusioned former Citroëniste.

31 July 2015
I didn't think the tri-turbo set up was quite complex enough, thankfully BMW have been listening.


31 July 2015
bomb wrote:

I didn't think the tri-turbo set up was quite complex enough, thankfully BMW have been listening.

Ha..exactly. while i admire the engineering and the torque will be monumnetal, this thing will chew through consumables like bas*ard.

31 July 2015
My best wishes to anyone buying a 3 year old 60k mile example of this engine.

15 October 2015
They can't even get the twin turbo's to last - two brand new ones failed here, one after 2,300 miles and another after 16k Miles. Never again.

15 October 2015
They can't even get the twin turbo's to last - two brand new ones failed here, one after 2,300 miles and another after 16k Miles. Never again.

31 July 2015
It doesn't matter, even if it's 600 bhp, they still haven't managed to get the offside indicators to work on a BMW when it pulls out into the outside lane on a motorway.

31 July 2015
pauld101 wrote:

It doesn't matter, even if it's 600 bhp, they still haven't managed to get the offside indicators to work on a BMW when it pulls out into the outside lane on a motorway.

There's an easy solution, fit lane departure warning that cannot be switched off, so the driver gets a reprimanding "buzz" for every misdemeanour! On another thing, presumably the turbos will be able to be deactivated for EU fuel consumption test purposes, so this gem can do 76 to the gallon on the combined cycle.

31 July 2015
So the Quad turbo offers two more turbochargers than the many run-of-the-mill twin turbo diesel engines on sale today. Even with four turbochargers 400bhp from a 3L diesel is not in the same ballpark as petrol engines which currently offer roughly 400bhp from a 2L with much less complexity.

8 August 2015
I am sure the same people knocking BMW with 4 turbos would the singing the praises of JLR if they came out with 10 turbos. Don't like the car, dont buy them.

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