[goodbyalfa]

I didn't buy this car for its economy, but it's great to know if you need to do a long run, it can return reasonable numbers.
Headed down to Cornwall for the long weekend with the family. Set off at 4:30am to be ahead of the traffic from just above Newmarket. Approx 300 miles later, it had recorded 42.4 mpg.
I had the car on cruise set at 5mph above and there were a couple of 50 zones, but this is a seriously impressive result.
Love Cornwall too.
The view is from a fish restaurant above widemouth which was excellent by the way...

[goodbyalfa]

As this is Cornwall, check out this improvised camper van... And the dude in it...
Zoom in on the right...

[Grant_7]

Yep, the B58 combined with the ZF8 is a fantastic bit of kit

My last tankful was my best ever - 35.98mpg brim-to-brim - and that's lots of Bank Holiday motorway traffic (stationary ) followed by some lets-release-the-tension Sport+ tomfoolery.

[isleaiw1]

Views look stunning, and the fuel figures are remarkable. Not sure how BMW do it as they are so much better than the comp manages. My son in law has a c43 coupe which is woeful on petrol, not much better than my bmw (although I am still pre RIS...)

[RobUK]

I remember when I got my 40i back in late 2015 and on a few relaxed motorway journeys I posted that I was getting well over 40mpg. It was met with much suspicion plus hoots of derision at the time but it's good to see that the B58 is emerging as a capable unit that doesn't have to kick you in the balls at every fill up

[ashenfie]

Originally Posted by Grant_7

Yep, the B58 combined with the ZF8 is a fantastic bit of kit

My last tankful was my best ever - 35.98mpg brim-to-brim - and that's lots of Bank Holiday motorway traffic (stationary ) followed by some lets-release-the-tension Sport+ tomfoolery.

While the 'D' is slated these days the 65mpg I get on a long run with any effort on my behalf must count for something. The B47 with ZF8 is a great combo also as it not slow either.

Certainly less CO2 and if those DPFs work then clean-ish air.

[blueislander]

It's a hell of an engine. I averaged 40mpg on a run from Edinburgh to Inverness...

... More than halved it once I hit the Highlands

[JD6]

Originally Posted by RobUK

I remember when I got my 40i back in late 2015 and on a few relaxed motorway journeys I posted that I was getting well over 40mpg. It was met with much suspicion plus hoots of derision at the time but it's good to see that the B58 is emerging as a capable unit that doesn't have to kick you in the balls at every fill up

My recollection of these type of threads during the 3/4 40i honeymoon period, was that some people were suggesting that 40ish average mpg was achievable in normal use, which didn't seem very realistic unless you were driving like Miss Daisy*

The 40i does seem to have pretty decent economy but the real world average economy seems to be about 30mpg according to the 130 340i/440i cars measured here:


https://www.spritmonitor.de/en/overv...0i&powerunit=2
https://www.spritmonitor.de/en/overv...0i&powerunit=2

That said, if my next car is 3 Series size, the M340i looks the best choice by some margin.




* - this film reference has been included to wind up a certain forum member who objects to it being used incorrectly!

[goodbyalfa]

Originally Posted by JD6

My recollection of these type of threads during the 3/4 40i honeymoon period, was that some people were suggesting that 40ish average mpg was achievable in normal use, which didn't seem very realistic unless you were driving like Miss Daisy*

The 40i does seem to have pretty decent economy but the real world average economy seems to be about 30mpg according to the 130 340i/440i cars measured here:


https://www.spritmonitor.de/en/overv...38;powerunit=2
https://www.spritmonitor.de/en/overv...38;powerunit=2

That said, if my next car is 3 Series size, the M340i looks the best choice by some margin.




* - this film reference has been included to wind up a certain forum member who objects to it being used incorrectly!

Mine averages 35-37mpg around where I normality drive. Perfectly reasonable for a 3.0l turbo petrol putting out over 320 bhp.

[gippy]

Originally Posted by JD6

My recollection of these type of threads during the 3/4 40i honeymoon period, was that some people were suggesting that 40ish average mpg was achievable in normal use, which didn't seem very realistic unless you were driving like Miss Daisy*

The 40i does seem to have pretty decent economy but the real world average economy seems to be about 30mpg according to the 130 340i/440i cars measured here:


https://www.spritmonitor.de/en/overv...0i&powerunit=2
https://www.spritmonitor.de/en/overv...0i&powerunit=2

That said, if my next car is 3 Series size, the M340i looks the best choice by some margin.




* - this film reference has been included to wind up a certain forum member who objects to it being used incorrectly!

this is correct, it entirely depends on the journey. the mpg drops significantly with innercity traffic.

motorway + not driving like miss daisy still gets 37-38mpg.
A 2016 honda type R would get me 42mpg on the motorway, so... a good effort from BMW i guess

[Abzynthe]

I've noticed the economy of mine get better and better as i put more miles on it. Only 11k at the moment.

I too get 38-40 mpg on long motorway runs, so you can imagine what I get around town or during weekend drives as my overall average is only 26ish lol

[isleaiw1]

Originally Posted by Abzynthe

I've noticed the economy of mine get better and better as i put more miles on it. Only 11k at the moment.

I too get 38-40 mpg on long motorway runs, so you can imagine what I get around town or during weekend drives as my overall average is only 26ish lol

My M5 currently is averaging more than that per the readout....

But it hasnt completed running in yet and most of the almost 500 miles it has done have been on the M1 (nearly 400 of them!)