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View Full Version : What's the Best Gas Mileage You've Gotten On your BMW?


alchemist007
04-17-2008, 05:34 PM
I was just wondering what the best MPG you have gotten?

Also I was interested in the below info -

Best MPG: 40
Average MPG: 25
BMW Model: 328xi 08'
Fuel Grade: 87-89

Are you satisfied w/ your Stats?

btw the only reason I got 40 once was because I did these things.

When ever It was the slightest down hill I put the car in nuetral.
When ever I hit a long red light I turned the car off.
I accelerated much slower than normal.

And I did some other stuff to help my mileage...

How bout you!

Starab
04-17-2008, 09:23 PM
Best MPG: 35
Average MPG: 24-25
Model: 2008 528xi
Fuel: 89 Top-Tier SHELL

I get 30-35mpg Hwy :
Active Cruise control stop n go
Follow the traffic and stay behind auto/truck with ACC( decrease winds).
I accelerate normal (under 3000rpm), no aggressive driving.
Speed 65-70 mph on Hwy/Interstate(65MPH)

I may do the following:
When ever It was the slightest down hill I put the car in nuetral( how do you maintain speed).
When ever I hit a long red light I turned the car off.

HampshireUk
04-18-2008, 10:00 AM
Best 45
Typical average 36-38
Model 2007 E93 330d auto

Highway somewhere north of 65
No consideration whatsoever - plant throttle and go.

Kzang
04-18-2008, 11:16 AM
I was just wondering what the best MPG you have gotten?

Also I was interested in the below info -

Best MPG: 40
Average MPG: 25
BMW Model: 328xi 08'
Fuel Grade: 87-89

Are you satisfied w/ your Stats?

btw the only reason I got 40 once was because I did these things.

When ever It was the slightest down hill I put the car in nuetral.
When ever I hit a long red light I turned the car off.
I accelerated much slower than normal.

And I did some other stuff to help my mileage...

How bout you!


Turning off your car and back on uses more gas no?
And how are you guys getting 40+ miles per gallon? Are you guys resetting your mpg guage and reading it instantly? lol

Best way to know exaclty how much MPG you are doing is with a pen and paper.

Desiboy
04-18-2008, 11:19 AM
Turning off your car and back on uses more gas no?
And how are you guys getting 40+ miles per gallon? Are you guys resetting your mpg guage and reading it instantly? lol

Best way to know exaclty how much MPG you are doing is with a pen and paper.

From all of my research, it's a myth. If you keep turning it on and off, then sure, but when you're sitting at a red light, you're getting 0 mpg. long red lights, along with things like railroad crossings can benefit from turning the engine off.

In fact, BMW's line of "efficient dynamics" vehicles do exactly that, turn off the car instead of idling.

ansun
04-18-2008, 04:13 PM
Turning off your car and back on uses more gas no?
And how are you guys getting 40+ miles per gallon? Are you guys resetting your mpg guage and reading it instantly? lol

Best way to know exaclty how much MPG you are doing is with a pen and paper.

In my X5 manual it recommends turning the car off at stops such as long red lights or train tracks in order to preserve gas.

LouT
04-18-2008, 08:18 PM
Best was single tank, calculated, of 31.2 mpg on a run from Denio, NV to home. Have a couple of other tankfuls on the same trip better than 30. Both of those were gotten on I5 to Arvin, CA.

Worst would be from my daily drive, 19.8 mpg.

Compare that to the best my previous e36 318i's 31.9. But, the 318 was getting 27.9 average over several thousand miles compared to the 330's 22.35, which includes a lot more short commute (5 mile each way) mileage.

Ryan M
04-18-2008, 08:30 PM
I read a study that said if you idle for longer than 10 seconds it would be more beneficial to turn the car off. I only do it waiting for a bridge though, I don't feel comfortable having the car off when in traffic like at a light. You never know when you need to move out of danger.

As far as the best mileage I've gotten, I recently went on a 200 mile trip and at the end I calculated my mileage and got 24. I was pretty happy with it.

Pinecone
04-19-2008, 06:10 AM
The heck with best, how about the WORST? :)

4.4 MPG, track session. :)

Z4 Steve
04-19-2008, 09:07 AM
Z4 Roadster.

Average=26 MPG going to Las Vegas
Shell 91 Octane

SC4ME
04-19-2008, 10:33 AM
I have a 330i ZHP 6 sp manual with 40 psi in my tires (standard staggered setup) and 91 octane fuel (highest avail in Cali)

I drive over 100 mi a day commuting and while I can get a bit spirited while getting up to speed, I do drive with a mind for gas economy while cruising on the freeways.

My OBC is steady at 28.2 mpg with an average of 47 mph for my everyday driving.

The best I have ever gotten is way above 200 mpg (coasting down a mountain) but in reality for a typical trip, I calculated a tankfull to have gotten over 32 mpg (over 535 miles for the tank!!).

ua549
04-20-2008, 06:55 AM
I've just finished a 3,800 mile drive from Florida to Arkansas, Oklahoma, Texas and return. The apparent (trip computer) overall mileage for both city and highway driving is 31 mpg. That includes lots of driving on back roads at less than 20 mph. I estimate that city driving was about 15% of the total miles driven. I drove with the flow of traffic. Highway speeds varied from ~65 mph to ~85 mph for long periods of time. I always used cruise control, but did not use any other "tricks" to save gasoline. Gas prices varied from $3.49 per gallon (Oklahoma) to $4.29 per gallon (rural Texas).

When I fill the tank and add up the gallons consumed from the receipts, I'll be able to calculate the actual miles per gallon for the trip.

BTW - On the return portion of the trip the car was heavily loaded with cases of wine from the Texas Hill Country and wine making region.

ua549
04-20-2008, 01:55 PM
The trip numbers are in.
The 535i consumed 121.154 gallons of 93 octane Shell V-Power fuel to drive 3,799 miles. :drive:
Fuel consumption was 31.36 miles per gallon. :thumbup:

After 5 months' use the car now has 5483 miles on it.
My biggest complaint is the nav system frequently gets lost and mis-directs me or stops working with errors such as road not digitized or navigation unavailable. :mad:

Kamdog
04-20-2008, 05:28 PM
NY to Florida, 28 mpg. Not trying to get good mpg, trying to make time without getting tickets. ( I happen to believe that it is my god-given right as a natural born American to do 10 mph over the speed limit on the highway. That was my baseline. Usually it was 12-15 over.)

Starab
04-21-2008, 09:16 AM
Filling tires with NITROGEN may help too ( Helped mine)
Specially when there lot of temperture variation
psi decreases or increases by 1 with every 10F( psi-mpg)

chonko
04-21-2008, 11:31 AM
My best is 35mpg on the highway. That is driving with measured enthusiasm on the accelerator, and using shifting to neutral when I am rolling down the hill. I avoid using cruise control because when going down-hill they tend to keep the car within the speed limit and when going uphill, they tend to accelerate.
City driving, I average 26-27mpg with about 20% HWY. Change gears at 2000 rpm in the first 4 and coast on 5 or 6.
I use Shell-91 grade petrol.

sillycar
04-22-2008, 07:45 AM
Well idling for 1 hour will eat up about 0.5 gallons so a red light doesn't really help much

This number depends on your engine size but works for me at 2.5 litres

I get about 31 mpg, never go above 65 mph

if i do hit 70 or 80 mph it's more like 25 mpg

Starab
04-22-2008, 08:54 AM
shifting to neutral when I am rolling down the hill. I
avoid using cruise control because when going down-hill they tend to keep the car within the speed limit and when going uphill, they tend to accelerate.
Change gears at 2000 rpm in the first 4 and coast on 5 or 6.


How do you maintain speed with neutral on rollng down the hill ? ( I never tried)
Watch the RPM and MPG pointer with your maneuvers,

CC is good on uphill(as you accelerate more on uphill-may go over 3000rpm- this will take more gas than on cruise, watch mpg pointer)

CC on downhill maintains the set speed, less rpm automaticallygives more mpg -watch the mpg pointer

I have steptronic auto.

chonko
04-22-2008, 01:45 PM
How do you maintain speed with neutral on rollng down the hill ? ( I never tried)
Watch the RPM and MPG pointer with your maneuvers,

CC is good on uphill(as you accelerate more on uphill-may go over 3000rpm- this will take more gas than on cruise, watch mpg pointer)

CC on downhill maintains the set speed, less rpm automaticallygives more mpg -watch the mpg pointer

I have steptronic auto.

You have to shift down to a lower gear if you drive a manual transmission to slow the car down( engine braking) if you don't use the CC.
CC to me when going uphill accelerates too hard for my liking, hence my not using it. I gradually work on the accelerator up to the point where I down-shift to a lower gear.
CC going downhill, I noticed the car applies the brakes when the speed exceeds the preset speed, so I put it in neutral and carry more speed downwards with the revs at idle speed.

ua549
04-22-2008, 05:11 PM
CC downhill will apply the brakes to maintain the desired speed. That is bad for fuel efficiency.

jesimmons
04-22-2008, 06:45 PM
2008 535i - 1500 actual miles on the car.

Driving is mixed City / Highway (Daily round-trip commute includes about 20 miles of interstate at varying speeds).

Average mileage (per the iDrive computer): 24.7 mpg
Fuel Grade: 91 Octane (Shell, Chevron, or sometimes Sunoco)

BmW745On19's
04-22-2008, 06:48 PM
on the interstate going 60-110 cruising, i got 28 mpg from Tampa to Atlanta.

Coconutpete
04-23-2008, 08:23 AM
1999 328i - driving all highway to and back from NY one day.

Just south of 32mpg. (Measured MPH, not the computer).

chonko
04-23-2008, 10:31 AM
CC downhill will apply the brakes to maintain the desired speed. That is bad for fuel efficiency.


Yep, and you certainly do not want to do that if fuel economy is your mantra of the moment.

Starab
04-23-2008, 11:16 AM
CC downhill will apply the brakes to maintain the desired speed. That is bad for fuel efficiency.

On downhill with CC/ACC brakes apply to maintaain the set speed BUT If you see the mpg ponter, it will show high mpg (in contrary to above).

I have auto transmission, tried to put on neutral on downhill, CC/ACC disengaged(any other way I can go on neutral with the set cruise speed on downhill).

Steven335xi
04-23-2008, 11:57 AM
Best =22.7 mpg

If I was concerned about MPG, I would have bought a Toyota.

jmead11
05-11-2008, 07:15 PM
With my 03 325i Touring, I usually average 26 in the city and 32 on the highway. I have tried different grades of fuel, and all, 87, 89 and 91, appear to deliver the same mileage.

Kamdog
05-11-2008, 08:31 PM
NY to Florida, always going as fast as traffic and prudence allowed (kept it under 85, mostly). Made no effort to drive for gas mileage. Avg: 28.

aDoBo
05-12-2008, 08:40 AM
MPG: 27-28 mpg
Model: 01 325i
Commute 67 miles everyday doing 80.
Fuel: 91 Chevron

kostot
05-15-2008, 02:08 PM
2006 525xi, automatic

Best average tank-310 mile trip on the interstate, 32 mpg (using cruise at 72mph)
Average driving to work, 2 lane 55mph (plus maybe a little?) country roads: 27mpg

chonko
05-15-2008, 02:16 PM
The best I have gotten with my 330i is 35mpg and that was from Florida to Houston.
Driving within Houston, I am getting 27mpg for the last 2 months. Truth be told, I drive a manual transmission and I shift at 2000 rpm.

rogue38
05-15-2008, 08:36 PM
On my daily commute on country roads and state hwy with traffic - 31 mpg (Normal driving 26-28 mpg)

On a road trip from NC to GA 33 mpg (no cruise, just using the hills to my advange) Avg speed was 76 mph hit 120 mph once on a downhill.

chonko
05-15-2008, 08:47 PM
On my daily commute on country roads and state hwy with traffic - 31 mpg (Normal driving 26-28 mpg)

On a road trip from NC to GA 31 mpg (no cruise, just using the hills to my advange) Avg speed was 76 mph hit 120 mph once on a downhill.

:thumbup:

LBB
05-19-2008, 11:26 AM
Just drove from Chicago to Philadelphia and got a little over 30 MPG, and averaged over 64 MPH yesterday. It was great compared to my SUV.

mistercindy
05-19-2008, 01:31 PM
One time I got 46 MPG on my BMW.