[Bruce24]

I have a 2013 X3 28i. Lately for all highway I'm getting 26mpg where I tend to drive 70-75mph. For an average tank around town, I get around 20mpg. I'm pretty sure mileage has tailed off a little over the past 4 or so years.

[Msportdriver1]

Sorry for all you petrol guzzlers, mine around town 39-41 mpg and on a motorway run around 45 -48 mpg depending on staying around 60 mph or 75-80 mph for the lower figure, the diesel is great for mpg, even thrashing it around the lowest i have had has been 38mpg.

[tracer bullet]

Originally Posted by Bruce24

I have a 2013 X3 28i. Lately for all highway I'm getting 26mpg where I tend to drive 70-75mph. For an average tank around town, I get around 20mpg.

Almost identical numbers to my 35i.

[Stoy]

Originally Posted by tracer bullet

Almost identical numbers to my 35i.

seem on par with most 35i average

[rcsummers]

3.5xdrive

20 around town
25-27 highway cruising

[warsaw]

2013 N20 seems to be about 24 average at least for my driving habits, mostly freeways and 25% city with moderate traffic.
There's always a way to get better mpg, but it's not always enjoyable!

[383vett]

2012 3.5 Overall average 21.

[TylerDZHP]

2017 35i @36.5K miles: Fuelly MPG data over 18 fuelups that I have tracked so far (5192 miles)

Average - 22.3
Best - 26.8
Worst - 16.4
Last - 26.5

The best and last were practically all freeway. Usually get about 18-20 on the more city driven tanks. I could see doing a 27.5 or 28 MPG tank driving 65-70MPH with EcoPro and allowing the decoupling and coasting on downhills.

[Kbern55]

2012 28i with 95k miles. Average is around 21.8. Highway up to 25, seems to be lower than most here. about the same since i got the car in 2015.

[blueblazer]

2013 3.5i - highway ~26, combined ~22.5.