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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 12-08-2004, 11:54 AM   #1 (permalink)
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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..?
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Old 12-08-2004, 02:51 PM   #2 (permalink)
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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.
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Old 12-08-2004, 02:59 PM   #3 (permalink)
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dont accelerate so fast.
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Old 12-08-2004, 05:36 PM   #4 (permalink)
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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
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Old 12-08-2004, 05:44 PM   #5 (permalink)
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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
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Old 12-08-2004, 08:59 PM   #6 (permalink)
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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.
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Old 12-08-2004, 09:18 PM   #7 (permalink)
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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.
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Old 12-08-2004, 09:19 PM   #8 (permalink)
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and my avatar is my actual hamster hah. yes i have a hamster. two of them.
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Old 12-08-2004, 09:23 PM   #9 (permalink)
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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?
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Old 12-08-2004, 09:34 PM   #10 (permalink)
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its a plant. it was just running around. i let it roam freely in the evenings
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Old 12-08-2004, 10:28 PM   #11 (permalink)
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Get a HONDA haha..

13-17mpg here.. 20+ highway. going over 100 of course. hey, saves gas! (..)
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Old 12-09-2004, 01:53 AM   #12 (permalink)
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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.
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Old 12-09-2004, 07:25 AM   #13 (permalink)
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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
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Old 12-09-2004, 03:36 PM   #14 (permalink)
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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.
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Old 12-10-2004, 03:19 AM   #15 (permalink)
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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.
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