What To Do To Get Good Gas Mileage? - BMW Forum

diehard_vue · 12-08-2004, 12:54 PM

What do you guys do to your car or what maintenance should we do to keep our car from having good gas mileage?

I asked because somehow, my E39 seems to be swallowing up gas like quick!

Fuel Filter?

Air Filter?

Fuel Injection System dirty?

Or..?

bmwcrazy · 12-08-2004, 03:51 PM

Depending on how many miles are on your car, i would change the spark plugs, o2 sensors, make sure tires are properly inflated, all the filters that can be replaced. You can check if the fuel injectors are clogged if they are clean them or get new ones.

brien4787 · 12-08-2004, 03:59 PM

dont accelerate so fast.

billB · 12-08-2004, 06:36 PM

Quote:

Originally posted by diehard_vue@Dec 8 2004, 06:54 PM
What do you guys do to your car or what maintenance should we do to keep our car from having good gas mileage?

I asked because somehow, my E39 seems to be swallowing up gas like quick!

Fuel Filter?

Air Filter?

Fuel Injection System dirty?

Or..?

[snapback]245835[/snapback]

diehard_vue

First what is your current MPG? Did you notice a sharp drop from a prior MPG? one example? In cold winters when warming up for 10-15 minutes my car tends to burn more gas! driving habits, stick vs. Auto. etc etc

Torque · 12-08-2004, 06:44 PM

u can accelerate slowly, not start your car 10 minutes before leaving in the morning etc and get 20 mpg

or

u can drive like a maniac like i do and get 17-18 mpg. which would u rather do

TheHire · 12-08-2004, 09:59 PM

Quote:

Originally posted by Torque@Dec 8 2004, 05:44 PM
u can drive like a maniac like i do and get 17-18 mpg. which would u rather do

[snapback]246070[/snapback]

Are you serious?? Thatz awesome. I get 13-15 mpg in city

. Around 20 on highway.
And btw very nice avatar. I like it.

Torque · 12-08-2004, 10:18 PM

Quote:

Originally posted by TheHire+Dec 8 2004, 10:59 PM--><div class='quotetop'>QUOTE(TheHire @ Dec 8 2004, 10:59 PM)</div><div class='quotemain'><!--QuoteBegin-Torque@Dec 8 2004, 05:44 PM
u can drive like a maniac like i do and get 17-18 mpg. which would u rather do

[snapback]246070[/snapback]

Are you serious?? Thatz awesome. I get 13-15 mpg in city

. Around 20 on highway.
And btw very nice avatar. I like it.

[snapback]246168[/snapback]

[/b][/quote]
yeah. 18.3 last week and i dont know that there was a drive when i didnt go WOT at least twice

. im a very agressive driver.

btw. it's mixed city/hwy. about half each. pedal to the metal tho all the time.

Torque · 12-08-2004, 10:19 PM

and my avatar is my actual hamster hah.

yes i have a hamster. two of them.

billB · 12-08-2004, 10:23 PM

Quote:

Originally posted by Torque@Dec 9 2004, 04:19 AM
and my avatar is my actual hamster hah. yes i have a hamster. two of them.

[snapback]246181[/snapback]

I get something between 17-18 mixed revs/NYcity/hwy
Torque BTW What is this green stuff? What are you doing to the poor thing?

Torque · 12-08-2004, 10:34 PM

its a plant. it was just running around. i let it roam freely in the evenings

numberthree_ · 12-08-2004, 11:28 PM

Get a HONDA haha..

13-17mpg here.. 20+ highway. going over 100 of course. hey, saves gas! (..)

CosmosBlack · 12-09-2004, 02:53 AM

First of all, you didn't mention what E39 you have.
525, 528, 530, 540?
And there are so many things that can affect fuel consumption.
If you are nearing or hovering around 100k miles, it could be your O2 sensors...it could be anybody's guess actually!

Anyway, my E39 540i automatic gets 17-18mpg average
and I get 20-22mpg on the highway.

machinehead · 12-09-2004, 08:25 AM

Mine does about 22mpg (UK, US Gallon = 1.2UK) so that’s around 18mpg in US. Foot to the floor, is there another way? I never bought the car for economy though, if I wanted that I’d buy a 2CV! Oh, my bike only does 30mpg (US) but at 175mph! What do you want to get from a car anyhow.......? :nana

diehard_vue · 12-09-2004, 04:36 PM

Sorry guys,

I have an E39 99 528. Miles is around 85K. I'm the second owner and I'm not sure what he's done with the car so far as Maintenance goes... Is there a way to find out? And for you Older and Wiser BMW Owners, what should I expect as far as maintenance? Tune Up? Oil Change? Or should I wait for the Service light? And I don't like for the Service light to come up just like all you others..haha.

My 2 front tires are getting to the point where I need to change them so that could relate to the problem.

Thanks for all the inputs.

BeelZibub · 12-10-2004, 04:19 AM

Quote:

Originally posted by billB+Dec 9 2004, 12:36 AM--><div class='quotetop'>QUOTE(billB @ Dec 9 2004, 12:36 AM)</div><div class='quotemain'><!--QuoteBegin-diehard_vue@Dec 8 2004, 06:54 PM
What do you guys do to your car or what maintenance should we do to keep our car from having good gas mileage?

I asked because somehow, my E39 seems to be swallowing up gas like quick!

Fuel Filter?

Air Filter?

Fuel Injection System dirty?

Or..?

[snapback]245835[/snapback]

diehard_vue

First what is your current MPG? Did you notice a sharp drop from a prior MPG? one example? In cold winters when warming up for 10-15 minutes my car tends to burn more gas! driving habits, stick vs. Auto. etc etc

[snapback]246065[/snapback]

[/b][/quote]

Your car burns more gas when started from cold because it is set to run lean (very lean in fact) so as to get the catalytic converter to working temp (cats don't operate efficiently below a certain temp). So if you do a lot of short journeys and let the engine get cold in between you will be running her lean continuously.