Fuel Economy

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Manufactured from end of 2011

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Flukeymuch
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Re: Fuel Economy

Post by Flukeymuch » Thu Oct 13, 2016 12:05 am

Ry_B wrote:Out of interest why would you use 5th gear for motorway speeds rather than 6th? Why would you want it to rev higher when 6th would alrrsdy be high enough at 1500/2000rpm?
It's because of the constant 50mph limits on M62 (around Manchester). For some bizarre reason doing 50 in 6th feels numb. 5th hits the sweet spot for decent kick when slowing down, and upping back on gas from 40 to 50 constantly during high traffic hours.

If it's a clean 70mph run, 6th it is.

Bare in mind its a 116D :D It's very particular on the power range.
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GeeDee
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Re: Fuel Economy

Post by GeeDee » Fri Oct 28, 2016 10:15 pm

Octavius wrote:For some reason my fuel economy vastly improves when my wife is in the passenger seat.
Conversley, my fuel economy improves when my wife is in the driving seat but my state of mind deteriorates....
64 plate F20 M135i-Auto used in M :drive:-LSD-Sunroof-Bells & whistles-OBDII Reader-No dipstick-Jack in boot-Tesco 99-Can be driven off without key-Bluetack on mirror sensor-Handbrake bedded in-No obvious difference between Comfort & Sports

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Doakley
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Re: Fuel Economy

Post by Doakley » Sat Oct 29, 2016 7:42 pm

Zeb84 wrote:Slightly off topic, does anyone have a 116D ED Plus, if so what sort of MPG are you realistically achieving? I've only had mine 3 days. The 83MPG headline figure is what made me go for it.

48mpg from my 116D Msport Manual. Getting about 500 miles to tank :wink:
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Re: Fuel Economy

Post by AJ_ » Sat Oct 29, 2016 8:20 pm

I've had my 116D M Sport for around a month and the MPG I am achieving has by far exceeded my expectations. On my fourth tank currently and each time I have exceeded 600 miles to a tank. In fairness, the vast majority of my driving is sat on the motorway in 6th gear using Eco Pro, with the Speed Limiter set to 60. On most occasions the trip computer shows 65+ mpg and on a constant run it's way into the 70's.

Even on more spirited runs down the motorway at 80-85mph I am still achieving above 50 mpg!

AJ
GONE - F20 LCI 116d M Sport (Estoril Blue)

ste111
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Re: Fuel Economy

Post by ste111 » Sat Oct 29, 2016 9:53 pm

Hi folks,

I'm new to the forum, recently invested in a 125i.

Generally really like the car the only thing i can't get my head around is the economy. On a 90mile dual carriageway at 70mph (on cruise control in eco mode) it does around 33mpg. On A roads generally going slowly and shift with the indicated the most i've ever had is 34mpg.

Is this normal?? Its not a big issue as i don't do many miles but I cant understand how it has the same economy as my mates 10year old megane 225. Would appreciate some input from anyone who has one as i have read some people posting high 30s on long trips.
125i Manual f21

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Re: Fuel Economy

Post by Mr Kirk » Sat Oct 29, 2016 10:14 pm

ste111 wrote:Hi folks,

I'm new to the forum, recently invested in a 125i.

Generally really like the car the only thing i can't get my head around is the economy. On a 90mile dual carriageway at 70mph (on cruise control in eco mode) it does around 33mpg. On A roads generally going slowly and shift with the indicated the most i've ever had is 34mpg.

Is this normal?? Its not a big issue as i don't do many miles but I cant understand how it has the same economy as my mates 10year old megane 225. Would appreciate some input from anyone who has one as i have read some people posting high 30s on long trips.
Your mates driving his Megane wrong. I get 25/26 in mine.

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andyc1988
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Re: Fuel Economy

Post by andyc1988 » Sun Oct 30, 2016 9:41 am

ste111 wrote:Hi folks,

I'm new to the forum, recently invested in a 125i.

Generally really like the car the only thing i can't get my head around is the economy. On a 90mile dual carriageway at 70mph (on cruise control in eco mode) it does around 33mpg. On A roads generally going slowly and shift with the indicated the most i've ever had is 34mpg.

Is this normal?? Its not a big issue as i don't do many miles but I cant understand how it has the same economy as my mates 10year old megane 225. Would appreciate some input from anyone who has one as i have read some people posting high 30s on long trips.
You could try some different fuel. I've always used Shell, but Shell, ESSO and BP regular fuels are of a higher standard than supermarket crap that's mixed with bio fuel. You might also want to try some of the premium fuels, I hear Tesco Momentum is supposed to be good, but whether it's still contaminated with vegetable oils I can't be sure. Back when V Power was only a few pence dearer than normal fuel I used to run my Clio 182 on it, I gained enough MPG increase to more than compensate for the extra few pence per litre - so it was actually cheaper to run.
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Re: Fuel Economy

Post by DodgerC » Sun Oct 30, 2016 9:55 am

I also have a 125i and unfortunately the fuel economy isn't as good as the brochures say. When I was looking for mine, the combined mpg figures shown in a BMW brochure were 42.8mpg.

I am a very light footed, smooth driver and my average is showing just above 34mpg.

I haven't done much long distance motorway driving yet, but from the little I have done, it seems to creep up towards the high 30s/early 40s in eco mode.

I too thought a newer more fuel efficient engine would have been better on fuel economy, but I wouldn't have bought the 125i if I was looking for pure fuel economy I suppose.

Edit; Mine is now running around 38mpg.

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Last edited by DodgerC on Sun Oct 30, 2016 9:55 am, edited 2 times in total.

ste111
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Re: Fuel Economy

Post by ste111 » Sun Oct 30, 2016 4:39 pm

DodgerC wrote:I also have a 125i and unfortunately the fuel economy isn't as good as the brochures say. When I was looking for mine, the combined mpg figures shown in a BMW brochure were 42.8mpg.

I am a very light footed, smooth driver and my average is showing just above 34mpg.

I haven't done much long distance motorway driving yet, but from the little I have done, it seems to creep up towards the high 30s/early 40s in eco mode.

I too thought a newer more fuel efficient engine would have been better on fuel economy, but I wouldn't have bought the 125i if I was looking for pure fuel economy I suppose.

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Yeah, decent shout Andy, i think i'm going to fire some premium fuel in it. As you say hopefully get the cost back in millage.

Yeah, Dodger, it's interesting that you're still getting high 30/ early 40's on long trips as that was what i was hoping/expecting. Anything over 35mpg seems quite literally impossible even when you're only using a few of it's ponies cruising around. Tried all the usual tricks like full service, tyres and injector cleaner can't think mechanically like there could be anything else and although 100% subjective it seems to pull well. Maybe the 45k miles have worn it down a bit.
125i Manual f21

DodgerC
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Re: Fuel Economy

Post by DodgerC » Sun Oct 30, 2016 4:47 pm

Mine is still low mileage at the moment, but I do use shell v power in it everytime, so might be worth a few tanks of that and see what happens as mentioned above.

The only time I really use eco mode is in traffic or long motorway journeys, otherwise I'm usually in comfort for everyday driving.

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Re: Fuel Economy

Post by Medici » Sun Oct 30, 2016 7:06 pm

Hi from a new joiner.
I just picked a used 125i yesterday, 24mpg driving it back locally.
But I know I wasn't changing up soon enough, the gearing is definitely shorter than what I was used to, having previously had an E36 M3 since the turn of the century. The M3 used to do around 27 mixed and 30Mpg on a motorway run. Am hoping for a bit more from the 1er.
After all, the 125i is supposed to be sensible practical 5dr compromise.

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Re: Fuel Economy

Post by kriswork » Tue Nov 01, 2016 12:40 pm

21000 miles in my pre LCI 125D - getting 50MPG on mixed country roads, mostly taking it easy, but with moments of full power.
My Wife's 320D Tourer (2010 plate - 184BHP) - getting about 50MPG
My original 120D (54 plate - 163BHP) - used to get about 50MPG
Winter tyres fitted - now where's that snow.

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Re: Fuel Economy

Post by Medici » Wed Nov 02, 2016 10:34 pm

OK, so a125i can do reasonable figures!

My first trip to company HQ, M4/M25/M1 essentially a Reading/MK return during peak times. 39.1 there, 40.2 coming back.

ste111
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Re: Fuel Economy

Post by ste111 » Fri Nov 04, 2016 1:53 pm

Those are very respectable figures.

For anyone who's interested i figured out what was wrong with the economy in my 125i... as it turns out absolutey nothing. The onboard computer has obviously got high at some point and has lost all recollection on how to record fuel as the journey comp showed 34.1mpg but brim test 39-41mpg. :spotman: Happy now the 125 is living up to its all round duty's!
125i Manual f21

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Re: Fuel Economy

Post by Griff_L » Fri Nov 04, 2016 9:27 pm

As someone else stated the greatest aid to fuel economy is to have the wife beside you !! Then I get around 50 mpg, on my own I get around 42 mpg. these figures on non congested out of town journeys. Suburban drops to around 35.
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