nashdm2

BMW 520d B47 Engine Fuel Consumption

193 posts in this topic

2,800 miles around Europe in a week including cruising where possible at 100-120 on the Autobahn and cruise control at 81 mph in France  I got 48 mpg

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6 hours ago, nashdm2 said:

DarkEnergy, is your car a B47 engine?

The production date is April 2013 so it is not a B47 but a N47.

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Exactly. At 120kms I get high 40's mpg. Even at 110 kms there is hardly any improvement.

 

Go above 80 moh and mpg drops to low 40's in my 518d auto

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3 hours ago, Ram Rod said:

Exactly. At 120kms I get high 40's mpg. Even at 110 kms there is hardly any improvement.

 

Go above 80 moh and mpg drops to low 40's in my 518d auto

 

That is not much different from my 520 auto

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Mine is slowly getting better now. It has 11k miles on it and nearly 3 years old. It does not do any local journeys as the car is only used for long stuff etc, which, may be masking the true MPG as there are no local journeys mixed in. The in car computer is showing 47.5 MPG and has not been reset since new.

Given my apparent delight at this figure, it is still nowhere near what a N47 would do given the same circumstances which for those of you that have followed the whole thread from the start will know is my main gripe.

Edited by nashdm2

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Just curious, but are you relying solely on the on-board computer for consumption? They do seem to be more accurate these days some still can't be relied on to give a true figure unless you take the trouble to calibrate them (I can't be bothered).

Whenever I want to check consumption I do brim-full to brim-full even using the same pump if it's convenient to do so. Consumption is always a tad higher than the OBC reports. I only tend to check the longer journeys as shorter trips are never going to do me any favours.

 

 

Sent from my Vodafone Smart ultra 6 using Tapatalk

 

 

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42 minutes ago, pidgeonpost said:

Just curious, but are you relying solely on the on-board computer for consumption? 

 

Yes, I don't want a more accurate "brim to brim" calculation which is going to give me an even worse mpg, I'll be even more annoyed then :unsure:

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3 hours ago, nashdm2 said:

Yes, I quoted the on board computer, but, I keep a spreadsheet with brim to brim calcs also.

 

My On Board Computer is never more than +-1 mpg out on every brim to brim refuel.

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I don't know which engine 'variant' I have, but I drive a 2011 520d Efficient Dynamics.

 

All I can say is: 650 miles to each tank.  Minimum.  Sport mode.

 

Is that good?

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51 minutes ago, Dr Taylor said:

I don't know which engine 'variant' I have, but I drive a 2011 520d Efficient Dynamics.

 

All I can say is: 650 miles to each tank.  Minimum.  Sport mode.

 

Is that good?

 

N47

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53 minutes ago, IanS100 said:

 

N47

 

Great.

 

I think my mileage/mpg is very reasonable.  Given 1.6 tons of car, plus occupants, 40-50mpg is fine for me.

 

Eco Porn mode is good on motorways: rubbish everywhere else.  IMHO.

 

Cheers!

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41 minutes ago, Dr Taylor said:

 

Eco Porn mode is good on motorways: rubbish everywhere else.  IMHO.

 

Cheers!

 

Eco Porn? I certainly didn't get one of those, can it be retro fitted? :D

Edited by IanS100
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On ‎24‎/‎07‎/‎2017 at 10:28 PM, IanS100 said:

 

Eco Porn? I certainly didn't get one of those, can it be retro fitted? :D

 

Eco Porn: even the dials go blue.  You KNOW BMW, as a good German scat-focused manufacturer, intended all red-blooded alpha dogs to understand the underlying concept.

 

MATRON.  <_<

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Read some of the stuff on this thread with interest. I have an 11 plate F10 525d auto - the 3.0 motor - and I came from a 525d (3.0) E60. The E60 was really good on fuel and I was concerned about the one I have now being more thirsty so I did consider getting a 520d but ended up with this one I have. I do tend to drive what I would call, sensibly, generally with the odd blast in sport mode just to keep it honest!!

 

The figures on the computer I do keep an eye on but I tend to take more notice of miles to a tank and so far the car pretty much will do 700-750 from completely full to the second fuel warning coming on (31 miles remaining) on pretty much every tank. I have had a couple of 675-700 tanks if I've done a bit in towns.

 

I have had one trip where I drove at 60 pretty much all the way from Carlisle down to Essex and back and got 816 miles from full to the 31 miles left warning - which to me is just staggering from such a large car.

 

I would be interested overall to know what others miles to a full tank figures are. Are the 2.0 engines similar to these figures? 

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That's petty good from a 525d but you should've got the 520d, I did a similar trip and it was so economical that I had to stop at Birmingham to let some fuel out of the tank lol :D

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I have a 63 plate 520d LCI, with 51k miles, which is used mostly on the motorway for a 40-mile commute each way. I consistently get 52-55mpg with my driving style, which isn’t too heavy footed, but I do like to make good progress. 

When I settle down and cruise along smoothly, I’ll easily get 58mpg. 

 

I had it remapped by DMS recently and that hasn’t changed it much. Daily MPG is the same, but cruising MPG is better. My max is 61.5mpg.

 

That said, since the remap, when you put your foot down and press on a bit, it really drinks! It’s so worth it though. 

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Here are Fuelly's user contributed figures for the 520d over the years: http://www.fuelly.com/car/bmw/520d  These don't show a downward trend with the later engine.

 

I have just bought a 520d B47, to be collected next week. I am expecting to get close to 50mpg from the car but that's because it will do mostly motorway work. Click my Fuelly link below and see what economy I get out my current 3.0 petrol thanks to the trips I do - pretty good eh? No effort is made to save fuel ... car just likes motorways.

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