BMW’s Incredible Quad-Turbo 750d Serves Up A Massive 400bhp And 560lb ft
Remember that astonishing quad-turbo BMW diesel engine we spoke about a couple of weeks ago? Well, here’s what it’s being fitted to: the 750d and 750Ld xDrive.
Along with the announcement of the car, we’ve now had confirmation of the power and torque outputs: 394bhp and 560lb ft, which matches claims made in a prior report from Bimmerpost. According to BMW, that makes this ‘B57’ 3.0-litre engine the world’s most powerful six-cylinder diesel.
As a reminder, the B57’s triple-turbo ‘N57S’ predecessor used a small turbocharger for low revs, with a larger one kicking in at the mid-range and another little blower for high engine speeds. In the B57, that bigger turbo is replaced with two smaller turbos. The resulting 394bhp output gives the 750d a 0-62mph time of 4.6 seconds, while the long wheelbase version is a tenth slower owing to the extra weight.
Where things get really interesting is torque deployment. The B57 makes 332lb ft of twist at just 1000rpm, with the full 560lb ft felt from 2000-3000rpm. It’d be good for even more than that, if the eight-speed, ZF-sourced gearbox could actually take any further torque without being in danger of going pop.
Speaking to a BMW UK representative today, we were told that the 750d xDrive unfortunately won’t be making it to our shores. BMW wasn’t able to confirm whether or not the B57 will make an appearance in another of its cars, but hinted that it’s likely. So, it’s reasonable to speculate that we’ll get a successor to the mighty M550d in the near future.
Comments
I can tell you right now this thing would monster a stock I6 Cummins pickup. Think about the weight difference, think about the fact this is coming out of an I6 half the size. Want to know more on the turbo pressure numbers.. Want to see one that they had turned up too high during proving ground runs :)
So how much is the weight difference?
You guys have no idea how terrible it is working on these new B series engines. Its like perfoming open heart surgery every time that hood pops.
That is the staple of BMW servicing for the past 15-18 years.
Anyone else wanna see this under the hood of an AWD 1 or 2 series?
That’s something I can’t answer, depends on how the owner takes care of his ride. I have seen both Rams and BMWs in pretty good and bad condition. But talking about the engine, if both are taken care of the same way, The cummins will outlast the Bimmer.
I reckon the Caterpillar C16 might have a bit more
When in 10 years your mechanic will say, that 3 of 4 turbos are brokenand then you’ll see the bill :-O
double post to be deleted :)
400 bhp for a l6 diesel engine ? That’s cute !
This is the engine, alongside with purely electric or hybrid systems, that should be powering BMW 7-series, MB S-class, Audi A8, X5, GL, Q7 etc etc. And 6-litre V12s and V8s should be left for sports/supercars and GT cars.
In other words, 760i makes no sense to me. I’d rather get this diesel engine for the 7-series for ‘daily driving’ and a V12 for the 6-series (if they were making one).
There’s a typo either on the title of this article or in the article itself… its 560 lb-ft or 760 lb-ft?
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