[sirch]

I have been looking around and do not see a thread on average mgp/fuel tank range with associated mods, and thought I would start one.


2015 320i 35 mpg and roughly 550 miles a tank (can normally fill 16-16.5 gallons).

If I drive aggressively in the city I lose 25-50 miles per tank. I currently drive into work 50+ miles with the majority being highway miles into Denver driving 80-90 mph.

[BigJack75]

Wow I guess the motor and wheels does make a big difference!!!

2015 435i M-Sport with 19" wheels. I get around 17-18 mpg and maybe 250 miles to the tank. To be fair though I only drive 2 miles to work and do mostly short stop and go driving. I fill up when the car tells me I have less than 30 miles left which only lets me put in about 14 gallons. There is always residual gas.

[Gospeedracer]

I have a 435i 6mt FBO with mhd stage 2 flash 19" Bbs wheels and continental extreme contact tires

City I get 16-18 ,highway 22-25. I haven't tried chasing mpgs with eco mode. Am curious of its true effect.

[rjd_F30]

328i xDrive, mods in signature. I average 24.9mpg. I only drive in sport mode, I'm sure that doesn't help.

[sspade]

2014 328i, FBO with Bootmod3 Stage 1 / 91 octane flash tune. Full mod list in garage.

I consistently get 32mpg out of my tanks, most of which is highway cruising at 80mph. For straight city - I would estimate 28mpg city and for straight highway probably 35mpg. Only top tier fuel.

I also generally run the tank from literal full to empty. I can say that the "estimated miles remaining counter" is highly accurate. You can actually drive down to 1 or 0 miles without fear of running out of gas*


*we should not debate whether or not this is good or bad for car.

EDIT: I'm going to revise my straight city estimate to 26.

[MONSTAR]

I commute 24 miles each way to work every day so almost 50 round trip. I get about 17-18mpg and fill up around the 220-240 mile mark. I go over 100mph probably 5 or 6 times a day, sometimes 120 whenever there's a break in all of the stop and go traffic. JB4 map1, catless dp

[rjd_F30]

Originally Posted by sspade

2014 328i, FBO with Bootmod3 Stage 1 / 91 octane flash tune. Full mod list in garage.

I consistently get 32mpg out of my tanks, most of which is highway cruising at 80mph. For straight city - I would estimate 28mpg city and for straight highway probably 35mpg. Only top tier fuel.

I also generally run the tank from literal full to empty. I can say that the "estimated miles remaining counter" is highly accurate. You can actually drive down to 1 or 0 miles without fear of running out of gas*


*we should not debate whether or not this is good or bad for car.

That's not good for the car!

[Stevepr]

I don't have a regular drive pattern since I work from home.

428i with a N26 engine, and a bms stage 1, always use 93 octane gas

19-20 in city and 24-25 in highway per the computer average reading, but the computer also says I have a ~500 mile range when full and with a 15.8 gallon tank that equates to 31 miles per gallon. I can't explain the discrepancy, does anyone else get this?

Don't drive hard, mostly in comfort mode

I think the BMS stage 1 hurt my MPG averages

[waxwing_f31]

Originally Posted by Stevepr

I don't have a regular drive pattern since I work from home.

428i with a N26 engine, and a bms stage 1, always use 93 octane gas

19-20 in city and 24-25 in highway per the computer average reading, but the computer also says I have a ~500 mile range when full and with a 15.8 gallon tank that equates to 31 miles per gallon. I can't explain the discrepancy, does anyone else get this?

Don't drive hard, mostly in comfort mode

I think the BMS stage 1 hurt my MPG averages

I have a '14 328xi msport wagon. My commute is only two miles on back streets.. which I know is really rough on the car. Kills me, but I have to drop the kids at school and it's too darn cold to walk. Anyway I'm getting a paltry 14mpg! That's in comfort and taking it easy. I do get to open up on weekdays, but doesn't seem to get great mileage then either.

Replaced my HPFP recently, which was failing, but that hasn't helped. Car seems to be running fine and no CEL or stored codes. Checked the plugs and it doesn't appear to be running too rich. Air filter is brand new K&N.

What gives?! Any ideas?
Need to clean the valves? Need new plugs?

[Gen13 F36]

428i GC with bm3 s1 and awe exhaust. Tires on signature

17-18 mpg 90% city ( sport mode 100%)

Long highway trip like LA to Vegas (300 miles). I get 38 mpg.

[RMachuca3d]

winter gas around 25mpg combined, 3\5 highway (more often than not mostly traffic) 2\5 city 50 mile commute daily. Summer time gas 27-28, n26 RWD stock other than catback.

[chowser51]

Mine sucks.
B46 engine
BM3 stage 1 93 octane (since thanksgiving)
17” snow tires in winter
19” summer tires in summer