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Slev

G31 520d economy!

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One month ago I collected my brand new wheels, as always a moment of both excitement as well as nervousness! Since this is my money and not some company perk. We all know the questions  Did I research enough? Since I am personally new to the brand will BMW deliver on the marketing or are BMW dealers just after my access to my wallet?  Will it be as good as my outgoing car? Will the auto gearbox frustrate me? Will this engine be more reliable than the previous 2.0d, or will I have a big bill at 100,000 miles?  You know the standard concerns

So 2000 miles later, my biggest bug bare is the fuel economy, which I am frankly amazed at.  In my 45 mile drive to work on a open road (little congestion or town traffic) I am only getting between 40 and 43 mpg.  (My outgoing car, which was 5 year old C class used to get 48 to 55mpg and I didn't have to be disciplined in the use of the accelerator).

My question to you all, who have experience of the new shape 5 series (G30 or G31), is this your experience, and I have to get use to driving like a granny in order to achieve any realistic economy, or do I need to get the car seen by an engineer?

I have tried all the different modes, Economy pro, Sport, Comfort, in auto sport and manual, and using the Eco pro in auto produced the 46mpg, however I had to drive like a pensioner with a Prius, all other options have resulted in low 40's.

I am open to all ideas, (other than drive like a pensioner), otherwise I will be changing this car very quickly, before the miles start to rack up.

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If it is like the F10 (same engine) you will see improvement as the miles build.

 

I regularly see over 50 mpg but the "improvement" only started after 20k miles.

 

Before that 43-47mpg was the norm on my mainly motorway runs.

 

Of course it depends where you drive, if it's mainly in town don't expect miracles - 40mpg could be considered as good.

 

This has been the same with both my F10 520d's and my wife's 318d F30.

Edited by carrman

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My F11 520d auto averages 44mpg overall - can get well over 50mpg on a motorway run when light footed and well under 40mpg on small urban journeys. Mine is an early car with no eco-pro etc

 

They are big heavy estates but as above it will improve with miles.

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Hi Slev,

 

I don’t have a new 520d so I can’t advise you as to the specifics of that car, but I shouldn’t think the engine will be run-in for 20,000 miles. You say you will be getting rid of it quickly if the mpg doesn’t improve; is that wise?  You will take a big hit when you sell or trade-in and for what? £500 extra per year for fuel compared with your old Merc, based on an annual mileage of 20,000. If you like the car, enjoy it and don’t worry about ten quid a week. You could cover that by going to Starbucks three times a week instead of five. :)

 

As regards main dealers; of course they are after your wallet!  The local-to-me stealer charges at least £140 p/hour + vat for labour!  Cars -  especially nice cars - are a money pit; but I'm sure you already know that.

 

Cheers,

David

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Hi.

Took delivery of my G30 520d SE last week. I have done just over 500 miles and according to the trip computer I'm getting 53.5mpg. I have only used Comfort and Eco Pro modes. There are a couple of motorway journeys in there but also some urban driving.

 

I tend not to floor it away from traffic lights etc and drive on the speed limits most of the time. 

 

Long term I will be happy with anything near 50mpg. 

 

As for my car it's Med Blue with Cognac and Fineline Cove trim. Only other extras were driving assistant plus, folding mirrors and sun protection glass. Wish I could have upgraded the wheels as the standard 17" look a bit small and the tyres a bit big! Don't think I have had a car without low profile tyres for years. But it makes for a smooth drive and no banging and crashing over potholes like my previous car. 

 

I find the standard SE seats fine and at least they have partial electric controls. It was pretty hard to find out any info about the standard seats before ordering as most dealers only had high spec models on show.

 

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Fellow drivers, thank you for your responses already, clearly there is a view that I should just accept the current economy and wait for the vehicle to settle at around 20,000 miles, which interestingly also align with the first service and possibly new rubber!  This guidance it's self offers an interesting perspective if there is any corrilation.  Thank you Carrman, E39mad, and MKLad1975 for your experience, I personally was expecting more from BMW and to be in the same ball park as their German counterparts.

DeeGee, you do offer financial logic in your argument, I am just disheartened that I am paying a further £40 / month to run the car!

Tom SUFC, your comment is also interesting you like me have a SE, we also had the same thoughts regarding wheels, but I did opted for the wider 18's, (with the run flats) as an option, but it may appear that there will be an additional running cost in the form of economy to absorb.  

When you are inside the car, and the car grips, who cares what the wheels look like, perhaps it was I who didn't make the correct choice.

A friend also guided me to review the tyre pressure (which were all 2psi below the required pressure when delivered - this is however green on the tire pressure monitor), so I having pumped them all to just over the specified +2psi, (usually 2 up with luggage) and I have now suddenly got over 45mpg on my trip to work!  (4 miles of 30mph, the rest is duel carriageway / motorway).  Still not 50+, but a step improvement.  I am open to all other opportunities.

 

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60.2 mpg over 100 miles to Bolton this morning!

 

I check the fuel consumption at every fill up and the computer is very accurate.

 

The bonus is that cumulative range is currently showing 850 miles!

 

My car has 47000 miles at the moment.

 

I'm sure my 530e will never get this.

 

Tyre pressures were too low when both of my F10's were supplied. It's worth getting these right or you may get uneven tyre wear.

Edited by carrman

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Mines covered over 700 miles now. Daily commute is 40 miles out of London on the A12, m25 and up the M11. Town traffic on either side of the motorway blast both morning and afternoon. I average around 48 mpg. Tend to drive in Eco Pro on my way to work. 

 

As stated above, check all Tyre pressures. Go into Eco pro and ensure that everything is switched on. Most importantly, coasting. I find this saves the most fuel. I tend to be doing the speed limit or just over. Cruise control most of the way.

 

My old F10 averaged around 42mpg on the same commute so fairly chuffed with 48mpg to be honest, think that that is a very good result for such a big car. 

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My G30 (520 SE) is now at 6700 miles, average is 54.6, but daily commute is 90% motorway / dual carriageway running in eco mode. Generally smoothish driving but occasionally push it hard but don't need to crawl around in 60s like had to on previous Mazda 6 auto to get 50mpg.

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i have around 6000 miles on my 530D Xdrive and get overall average of around 48

so i get something like 42-44 going in and out of work and 50-60 on long motorway journeys..... when i put it into sport mode and knkck gear lever to dynamic i am truly amazed at these figures given the performance 

Eco mode does what it says and it will coast after going downhill forever 

 

i keep accirate rate records for expenses and the car computer is spot on for MPG +/- 1mpg i would say 

 

i did have a 520 D to drive to scotland last week, it had 8 mile on clock and i did 700 mile round trip, up to scotland i got 46 and coming back around 56 

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On 7/17/2017 at 10:17 PM, Slev said:

but I did opted for the wider 18's, (with the run flats) as an option, but it may appear that there will be an additional running cost in the form of economy to absorb.

 

 

Indeed - having had 18s as an option on my first 520d I was getting quite a few less mpg than colleagues with the standard SE rims. It was only a change from 225 to 245 but seemed to make a big difference.

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11 hours ago, huggy said:

 

i keep accirate rate records for expenses and the car computer is spot on for MPG +/- 1mpg i would say 

 

 

I've never seen a car with the computer MPG reading to be so accurate. Mine is also within +/- 1 MPG. Brilliant.

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1 hour ago, SuperDave said:

 

Indeed - having had 18s as an option on my first 520d I was getting quite a few less mpg than colleagues with the standard SE rims. It was only a change from 225 to 245 but seemed to make a big difference.

 

When I was ordering my 530e, I was asked to keep the standard wheels by my company to ensure maximum MPG.

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Hi All,

Had my F10 for 60,000 miles and averaged 45mpg (short commute to work and 100 mile+ journey twice a month).

With the G30 I am getting 44mpg so not too bad but I have noticed that I don't get the economy I used to get on long runs.

 

If I am proper gentle, averaging 60mpg I used to get 68mpg, in the G30 I get 53, so I am hoping that the engine will run-in and it will improve.

 

One thing that I am really struggling with is the seat, I am getting chronic back ache. I have the 520 M sport and the seats are not good!

Didn't opt for the lumber support on ordering as the F10 (not M Sport I will add) was superb.

 

Spent £300 last week getting lumber support fitted and it's still no better. Seriously considering getting rid of it with a £4500 loss! (Yes it is that bad!)

 

Anyone else finding the seats uncomfortable?

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My journeys are around 1 hour each way for work, but have done 4-5 hour journeys, and even toured Europe, and have never had a problem with the standard seat on my F10.

Not being comfortable in the seat on a car like that has to be very disappointing.

I'm guessing it is the car seat and not due to stressing your back doing something else.... 

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8 hours ago, farzad said:

My journeys are around 1 hour each way for work, but have done 4-5 hour journeys, and even toured Europe, and have never had a problem with the standard seat on my F10.

Not being comfortable in the seat on a car like that has to be very disappointing.

I'm guessing it is the car seat and not due to stressing your back doing something else.... 

 

I am gutted, the rest of the car is amazing, really pleased with it but I can't cope with the discomfort.

Have played with all settings trying to find a comfortable position with no success.

 

I spent 8 hours solid in my F10 and got out feeling fresh as a daisy! Milton Keynes to Dusseldorf - now I can't drive longer than 20 minutes without feeling it.

 

I have a G30 SE to drive for the weekend coming up, will see if it's the M Sport seats or not.

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So with tyres at the correct pressure, all loads removed (even air-con off) The consumption has not changed. Now approaching 4000 miles and I am still only seeing a tankful average of 42mpg.  (latest tankful has produced just 40 mpg and I am looking at purchasing a flat cap to match my driving style!)!)  As the mileage increases, the consumption appears to be getting worse not better, and this is with expensive fuel Shell / BP!

 

1000 miles ago asked to dealer to review it, so they drove it saw 49 mpg at one stage of a 15 mile trip, even though the average for their trip was 41.7, and declared the car as good and the consumption acceptable!  I have not seen sub 40mpg in a 2 litre   since I had a Alfa 159 diesel!  (she; definetly a she, did not allow you to potter!)  I used to get 42mpg with my wife X1 4 wheel-drive!

 

As a comparison,  to check fuelling, on a duel-duel-carrageway I have set my cruise control on at 70mph, put it in M8 and monitored the consumption per mile and only just got over 40mpg.   Can I ask other people with G31's or G30's to try this just as a comparison.  See pictures below.

 

In relation to seats I have the comfort seats, which are exceptional.  Very soft, very very comfortable.  My wife X1, and 320d had M sport suspension and run flat tyres, and she also suffered with her back, she has nothing but praise for the comfort seats, as she falls asleep (as the passenger) after as little as 5 miles!  The seat are however expensive, but do hold you in by your shoulders, and   I think worth it after all what does a cosy living room chair cost!

 

IMG_20170814_192216839.thumb.jpg.b5f4f874ed7c8d4f8b829fe5738bb7b3.jpgIMG_20170814_192131661.thumb.jpg.ccb90c1bfc87a97c4da8f49392fbb41f.jpg

 

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Slev, for your info my drive to work and back is about 28 miles each way, and I hit a bit of traffic and some traffic lights, as well as get to do

normal driving on A roads.

I regularly get around 53 MPG these days.

The attached picture shows what I have managed to get before hitting traffic lights !

My 520d has now done over 80k, and I have kept a spreadsheet of every fill up with the miles traveled, and actual MPG, and how it compared to the car's MPG figures.

I have seen a gradual improvement from the low 40's.

During winter I seem to get around 45 and then around the 53 or so in the summer.

Hope this info helps you a bit

 

IMG_4859.thumb.JPG.364dd2835409b16f2b190bd34b1f0f5e.JPG

 

 

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shockingly high consumption. Im on 2300 miles now and car has settled in at 46mpg. But i do give it the beans rather often

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On 05/08/2017 at 9:42 AM, SuperDave said:

 

Indeed - having had 18s as an option on my first 520d I was getting quite a few less mpg than colleagues with the standard SE rims. It was only a change from 225 to 245 but seemed to make a big difference.

 

Yes. My car has staggered 18s, 245 front and 275 rear. When I bought it a previous owner had skimped on tyres and fitted 245 to the rear as well. They are a lot cheaper. I ran them for about a year and then fitted the correct 275, and sure enough I lost a few mpg and have never reached the previous levels again. Brand of tyres can make some difference of course, and as mentioned running them too soft will also cost you mpg.

 

On my old E36 many moons ago - I also remember moving from standard 205 15s to M3 replicas with 235. Slowed the car down noticeably, and less mpg too. Significant extra weight in the alloys as well as extra rolling resistance.

 

Edited by Tuvoc

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