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BMW M diesels

BMW officially reveals diesel-powered M models, including an M550d capable of 44.8mpg

BMW M550d front three quarter

By Luke Madden

25th January 2012

BMW has revealed official details of a range of M-badged diesel models set to go on sale later this year as part of the newly created ‘M Performance’ brand.

The three models – named X5 M50d, X6 M50d and M550d – will be unveiled at the Geneva Motor Show in March, and all make use of the same tri-turbo 3.0-litre six-cylinder diesel. 

The M550d will be available as a saloon and Touring estate, and it produces 376bhp, delivered to the rear wheels. That’s still 176bhp short of the M5’s twin-turbo 4.4-litre V8, but 74bhp more than the most powerful diesel 5 Series currently on offer. 

While it's down on the M5’s power output, it’s not far off in terms of performance. BMW claims the M550d will accelerate from 0-62mph in 4.7 seconds, which is just three tenths of a second slower than the M5. 

The gains in fuel economy are genuinely impressive, though. Where the M5 only manages 28.5mpg and 232g/km of CO2, the diesel manages 44.8mpg and 165g/km. Those lowered emissions alone will save £625 on the price of road tax for the first year.

Both X5 and X6 M50d models are four-wheel drive and boast similarly impressive figures all-round. Both are capable of almost 40mpg and 0-62mph times in the low 5-second area. 

Visually, the M Performance diesels aren’t as aggressive as their full-blown M stablemates, but subtle bodykits and alloy wheels mark the changes. The interior gets M-badgded door sills and a special steering wheel and seats. 

Chassis changes aren’t as comprehensive as they would be on M-badged models, but engineers have fitted the diesels with a few upgraded components and tweaked the suspension settings. 

Prices haven’t been released for the M550d yet, but the X5 and X6 M50d will cost £60,325 and £62,260 respectively. 

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12 Comments

The X6 50i petrol costs £57,430 with 408bhp.
So you would need to run for a long time to get back a premium of £4830 just to get even, then more miles to save overall.
Only economic for those who do super high miles every month.



By beachland on 26 January, 2012, 12:38am

The above still applies to all diesels really, higher initial cost plus servicing means you do really need to be doing the mileage.
Should be a nice set of performance diesels by BMW.

By FactoryWorks on 26 January, 2012, 7:31am

Talk about Torque

When the key characteristic of a diesel is its torque peak and range, which relates directly to a car's overtaking capability, why are these data not available?

By MontyX1 on 26 January, 2012, 7:39am

Don't forget depreciation-

These diesels will hold their value better too!

By OBMITTY on 26 January, 2012, 9:45am

Torque figures please?

Surely if you're talking about an oil burner you need to talk about the torque over the power, that is where diesels differ from petrol engines. It might have less power than the M5 but if its kicking out
similar torque figures, it'll still be just as rapid in real world road driving.

These things will sell like hot cakes!!

By nickeroo on 26 January, 2012, 10:48am

Ultimate Driving Machines new diesel will be another big winner

World premiere for a new six-cylinder in-line diesel engine developed exclusively for the BMW M Performance Automobiles; new, globally unique M Performance TwinPower Turbo technology: three turbochargers, common-rail direct injection with piezo injectors and maximum injection pressure of 2,200 bar; 3.0-litre displacement, 280 kW/381 hp, maximum torque: 740 Newton metres (546 lb-ft); instantaneous responses and outstandingly dynamic power delivery into the upper reaches of the rev range; maximum revs: 5,400 rpm.

Folk will have to join a very long queue,

By Richie767 on 26 January, 2012, 12:51pm

I don't think diesels hold their value better, in fact mostly petrol cars have stronger resale values and they have far less miles on them.

By beachland on 27 January, 2012, 2:26am

What matters

Forget the insentives, they depend on the legislation, market etc. If we look at pure performance/consumption or performance/CO2 ratios, these diesels are way ahead of anything gas engines can offer. I admire the fact that BMW had invested in the diesel technology in times when the trend seems to be putting e-motors from vacuum cleaners under the hood.

By Stivans on 28 January, 2012, 9:05am

You ain't seen nothing yet , wait till they come out with their sextuplet turbos --- YOW --- . They build the engines smaller and more complicated and can't wait till the warranty is off and you require maintenance $$$$$$$

By blinkster on 29 January, 2012, 4:49am

Four wheel drive

Is what BMW need now, I thought this X550D was going 4*4!!
Still no good in winter, but great performance/economy.

By john550i on 31 January, 2012, 9:21am

When will BMW realise that there are customers waiting for 4x4 saloons here in UK?

PS, if adding a third turbo improves on the 535d then WOW is all i can say!

By Adriants on 9 February, 2012, 6:23pm

How on god's earth do M [power] and diesel go together??? Is this some sort of special sacriledge?? Oh but wait, we're now 'told' by BMW that they do go together and this is the BIG NEW THING. This car maker stomps from gross to obscene in the lengths it will go to, to sell a few more cars. Not a single car maker in Germany has the foresight or ability to be a leader....they just do that sheep number and follow, and rather than 'grow the cake' they seriously lack any imagination and are capable of no more than stealing sales. Look at the boring plethora of pseudo coupes. I can forsee a huge dash of M owners rushing to dump their once special go-fast M badged BMW's, not wanting to be associated with rattly stinking old diesels. I'm sure someone could produce a diesel with a whole turbo per cylinder, but would you buy a ,000 car with a ,000 engine in it? When was the last time something came spewing out of BMW about their fantastically improved aerodynamics?? Ever?? Cd's can hardly matter when all you do is make a car lardier and lardier. BMW, cut 150-200kg off every M diesel and then you'll only need one turbo. SIMPLE!!

By barina47 on 10 February, 2012, 11:51pm

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Pictures

BMW M550d front three quarter
BMW M550d rear three quarter
BMW M550d  rear
BMW M550d gearstick
BMW M550d interior
BMW X6 50d front
BMW X50d front
BMW X6 M50d rear

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