Average mpg in in ECO PRO 2017 125D

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UnknownFuture
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Average mpg in in ECO PRO 2017 125D

Post by UnknownFuture » Thu Jul 04, 2019 7:27 pm

Just curious as to what everyone’s getting. I drive in sport mode normally using its performance so normally only manage low 30’s. I recently started testing a it in eco pro on commutes to work. I got 64.4mpg 17 miles town, 29 miles motorway and 2 miles dual carriage way.

Surprised to say the least. The town driving was in London so we all know how economical that is.

AME
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Re: Average mpg in in ECO PRO 2017 125D

Post by AME » Thu Jul 04, 2019 11:55 pm

Milton Keynes ish to Birmingham via M1. 1hr 10mins ish 65+ miles. 65MPG.

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Flat out
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Re: Average mpg in in ECO PRO 2017 125D

Post by Flat out » Fri Jul 05, 2019 8:06 am

AME wrote:
Thu Jul 04, 2019 11:55 pm
Milton Keynes ish to Birmingham via M1. 1hr 10mins ish 65+ miles. 65MPG.
Did you reset the fuel computer first to get that ?
from a 325 coupe to a 123dmsport and now with a 225d Msport in Estoril blue

RogerF
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Re: Average mpg in in ECO PRO 2017 125D

Post by RogerF » Fri Jul 05, 2019 9:42 am

Milton Keynes to Manchester this morning early hours, comfort mode, 58mpg, M1, A50, M6.
Must try it in ECO sometime seeing as most of the trip is eaither roadworks or speed cameras all over the place. A50 is good though, nothing on there :-)
'63 plate 125d M Sport

AME
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Re: Average mpg in in ECO PRO 2017 125D

Post by AME » Fri Jul 05, 2019 2:24 pm

Flat out wrote:
Fri Jul 05, 2019 8:06 am
AME wrote:
Thu Jul 04, 2019 11:55 pm
Milton Keynes ish to Birmingham via M1. 1hr 10mins ish 65+ miles. 65MPG.
Did you reset the fuel computer first to get that ?
Car resets after every journey. It was the first journey of the morning. Got another picture showing another run at 65MPG. I think I could potentially get higher MPG if I really drove it like a granny. But cruise control set at 70 and in town not much flooring it. Naturally.

Mine is a 2012. I’ve heard they’re more economical than the LCI one? I’m sure someone will correct me.

AME
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Re: Average mpg in in ECO PRO 2017 125D

Post by AME » Fri Jul 05, 2019 2:33 pm

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Jeo
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Re: Average mpg in in ECO PRO 2017 125D

Post by Jeo » Sat Jul 06, 2019 7:35 am

Most I’ve ever seen is 52mpg travelling at 60mph on a 70 mile trip.

On my regular 50mile commute to work I get 49.2mpg travelling at 70mph. Not sure how to coax more out of it tbh
2017 F21 125d M Sport
Gone 2011 E87 120d M Sport

padders
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Re: Average mpg in in ECO PRO 2017 125D

Post by padders » Mon Jul 08, 2019 8:19 am

While there will be variation between cars, on an LCI I would be skeptical that mid 60s results on the trip computer are reliable or repeatable based on my car and others. My best is more like Jeo above, mid 50s on a long 50mph limited motorway section. 52mpg is the best I have seen on a motorway speed long run and more like 35-40mpg on a mixed commute. There is plenty of anecdotal evidence the pre LCI cars are better at this, but realistically a brim to brim calculation is a better measure, the trip computer may just have over read on the pre LCI cars. I don’t think I have ever seen more than 500 miles out of a full tank.

For context, while these figures may not look great, like for like, on a commute where the 125d gives 35mpg, my 997.1 3.6l base model 911 gives around 18mpg, on a long fast run where the 125d is at 50mpg, the 997 is at 27-28mpg so there are compensations with diesel.
Current: M240i in MG with Cognac interior, Pro Nav, HK, Adaptive Shocks, MP-LSD, Sunroof, Active Cruise
Now gone: EB LCI 125d F20 8HP50: Oyster Leather, Active Cruise and Adaptive Suspension, PDC F&R, Folding mirrors, Pro Nav

AME
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Re: Average mpg in in ECO PRO 2017 125D

Post by AME » Mon Jul 08, 2019 3:46 pm

padders wrote:
Mon Jul 08, 2019 8:19 am
While there will be variation between cars, on an LCI I would be skeptical that mid 60s results on the trip computer are reliable or repeatable based on my car and others. My best is more like Jeo above, mid 50s on a long 50mph limited motorway section. 52mpg is the best I have seen on a motorway speed long run and more like 35-40mpg on a mixed commute. There is plenty of anecdotal evidence the pre LCI cars are better at this, but realistically a brim to brim calculation is a better measure, the trip computer may just have over read on the pre LCI cars. I don’t think I have ever seen more than 500 miles out of a full tank.

For context, while these figures may not look great, like for like, on a commute where the 125d gives 35mpg, my 997.1 3.6l base model 911 gives around 18mpg, on a long fast run where the 125d is at 50mpg, the 997 is at 27-28mpg so there are compensations with diesel.
Past 3 years I’ve been doing 25K to 30K a year in my 125D pre LCI. Car is always reset once fully fuelled. 600 miles per tank isn’t a rare thing even with mixed driving. It is such a great all rounder, though now being replaced by my 140.

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Re: Average mpg in in ECO PRO 2017 125D

Post by padders » Tue Jul 09, 2019 1:13 pm

It'll be interesting to see what you get with the M140i bearing in mind the figures I quote above. Presumably rather better than the big NA lump in the Porsche but way behind the 125D I should think.

I have wondered about replacing both mine with a M140i on more than one occasion but I wonder if I would miss both the sense of occasion of the 911 and more prosaically miss the active cruise control of the 125d which isn't even an option on the M-lite (but can be specced on the m240 strangely).
Current: M240i in MG with Cognac interior, Pro Nav, HK, Adaptive Shocks, MP-LSD, Sunroof, Active Cruise
Now gone: EB LCI 125d F20 8HP50: Oyster Leather, Active Cruise and Adaptive Suspension, PDC F&R, Folding mirrors, Pro Nav

mwhitta4
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Re: Average mpg in in ECO PRO 2017 125D

Post by mwhitta4 » Wed Jul 10, 2019 1:03 pm

This is really interesting. I have a 125i here in Australia, with a/c on constantly. For the last two weeks I have been running in Eco Pro and so far seem to get about 100 km (62 miles) more per fuel fill. The 125D isn’t sold here and petrol is cheap, but suspect that is a translatable measure.
Mike,

125i MSport, Alpine Whie, Comfort Pack, Coral Leather, Sunroof, Ferric Grey Alloys, DAB and window tints.

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Re: Average mpg in in ECO PRO 2017 125D

Post by Easy007 » Mon Jul 15, 2019 1:10 pm

padders wrote:
Tue Jul 09, 2019 1:13 pm
It'll be interesting to see what you get with the M140i bearing in mind the figures I quote above.
I've got a 240 and I've just come back from Barmouth to Stoke, 108miles with no m/way just flowing single carriageway over hills and mountains. Unfortunately got stuck behind caravans and wagons for most of the journey so no real silly stuff and resigned myself to eco pro and 50-60mph......

43.6mpg!!!!!!!

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Re: Average mpg in in ECO PRO 2017 125D

Post by crabbie666 » Mon Jul 15, 2019 2:00 pm

I Just got 44.6 MPG In my M140i on a 366 Mile Trip to Fort Augustus Scotland with a lot of windy roads and bit's of fun en-route
M140i ordered in alpine white

Tom
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Re: Average mpg in in ECO PRO 2017 125D

Post by Tom » Tue Sep 10, 2019 11:50 am

I have a 125d manual 64 plate so I'd guess the older engine.

I'm doing just over 100 miles per day, pretty much all motorway with next to no traffic on.

Never bother changing the modes just leave it in comfort set the limiter to 70 I'm averaging, with the odd bit of town driving, 59.7 mpg which I have verified by the fuel usage.

Can't complain, my integra does low to mid 30s on the same journey.

Sent from my MAR-LX1A using Tapatalk


MaxM140i
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Re: Average mpg in in ECO PRO 2017 125D

Post by MaxM140i » Tue Sep 10, 2019 3:03 pm

For the few moving from a 125d to a 140i - i did this.

I had a great spec lci 125d, it was great for exactly what alot of the above is about - doing a bit of fun driving and commuting while getting good MPG. I had my 125d for 13 months (the longest i have kept a car until my 140i which i've now had for 16 months).

my 140i can see 40-42mpg on a steady long run but to do it the accelerator has to be feathered, mid to high 30's on motorway journeys when you don't hang about but not gunning it.

Town driving is where it is worse, if i get stuck in traffic stopping and starting i see high teens. my average commute (10 miles with hills, national speed limits and town driving) sees 25mpg with traffic or 30 odd when clear.

Be prepared to use alot more fuel for the loud pedal too. Even at lower speeds in sports+ the sound is great.

In short you will love the 140 but it will of course be more thirsty. But for a 6 pot 3L engine its amazing!

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