318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Maintenance

Notices

Maintenance Service Interval questions, oil change info.

.
» Recent Threads
WTB: 318ti clubsport in...
05-21-2021 02:08 PM
Last post by jasminemicheal
Yesterday 11:55 AM
6 Replies, 2,391 Views
WTB: Manual 318ti
05-17-2021 09:34 PM
Last post by jasminemicheal
Yesterday 11:54 AM
3 Replies, 2,453 Views
WTB: M-Tech molding
06-25-2021 02:07 AM
Last post by jasminemicheal
Yesterday 11:54 AM
3 Replies, 3,708 Views
New
Yesterday 11:53 AM
Last post by jasminemicheal
Yesterday 11:53 AM
0 Replies, 69 Views
BMW type 32 alloy wheels...
07-22-2021 02:41 AM
Last post by old_sports_cars
07-22-2021 02:41 AM
0 Replies, 267 Views
15x6 steel wheels and...
07-22-2021 02:36 AM
Last post by old_sports_cars
07-22-2021 02:36 AM
0 Replies, 100 Views
Colorado Front Range...
07-11-2021 03:23 PM
Last post by b0m
07-20-2021 04:56 AM
9 Replies, 1,003 Views
'95 Boston Green, ALL...
06-29-2021 04:24 PM
Last post by 06MR6
07-20-2021 01:20 AM
8 Replies, 2,497 Views
WMD 456 Supercharger Kit...
07-13-2021 09:28 AM
Last post by MisterM52
07-16-2021 10:12 AM
2 Replies, 615 Views
recommendations for...
07-13-2021 04:48 AM
Last post by happysloth
07-15-2021 12:07 AM
2 Replies, 530 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 01-17-2010, 07:51 PM   #1
M1C8A3L
Junior Member
 
Join Date: Jan 2010
Location: Virginia
Posts: 3
iTrader: (0)
Default MPG Question

Hey guys,

I am a new member to 318ti.org so I apologize ahead of time if this thread is posted incorrectly. I have owned my 1997 for about three months now and it has 98k miles. I love everything about it except that i have been getting a consistent 18 MPG. I drive 80/20 town to highway but I still would expect to get better numbers. My mechanic said that the lowered MPG is due to the cold weather. Do you guys know whether or not the weather could sway my MPG so far off of the average?

I use premium fuel.

Thanks for your help,

-Mike
M1C8A3L is offline   Reply With Quote
Old 01-17-2010, 08:14 PM   #2
Recon427
Senior Member
 
Recon427's Avatar
 
Join Date: Dec 2009
Location: Chicago, IL
Posts: 181
iTrader: (1)
Default

Hi Mike,

A similar question to yours is being followed in my thread: http://www.318ti.org/forum/showthread.php?t=29207

Anyways, just as a recap check these things:
1) Spark Plugs
2) Air Filter
3) Fuel Filter
4) Proper Tire Pressure
5) Excess weight in car

Also note that you are using a heavier weight oil [5W-30] and the gasoline that is put out there now is winter gasoline. Meaning it has butane and other additives that help your car burn it easier and thus consume more.
Recon427 is offline   Reply With Quote
Old 01-17-2010, 08:30 PM   #3
M1C8A3L
Junior Member
 
Join Date: Jan 2010
Location: Virginia
Posts: 3
iTrader: (0)
Default

Thanks for the reply.

I will look into replacing those things.

I have seen many say that a replaced o2 sensor can also significantly impact MPG, do you think that would be better than any of the other options?
M1C8A3L is offline   Reply With Quote
Old 01-17-2010, 08:39 PM   #4
Recon427
Senior Member
 
Recon427's Avatar
 
Join Date: Dec 2009
Location: Chicago, IL
Posts: 181
iTrader: (1)
Default

Well, replacing your O2 sensor is the most costly endeavor, relatively speaking. I think they start at around $60 at Advanced Auto Parts. However, if the O2 sensor was faulty it would throw a Check Engine Light. Where as a fuel filter or spark plugs won't necessarily do that.

Your car has 98k miles. The O2 sensor should be replaced every 100,000 miles. This is covered by Inspection II at your BMW shop...so, if you do most of the work yourself then go ahead and replace it.
Recon427 is offline   Reply With Quote
Old 01-18-2010, 11:07 PM   #5
vjmvjmvjm
Member
 
Join Date: Aug 2005
Location: Shepherdstown, WV
Posts: 51
iTrader: (0)
Default

Quote:
Originally Posted by M1C8A3L View Post
I am a new member to 318ti.org so I apologize ahead of time if this thread is posted incorrectly. I have owned my 1997 for about three months now and it has 98k miles. I love everything about it except that i have been getting a consistent 18 MPG. I drive 80/20 town to highway but I still would expect to get better numbers. My mechanic said that the lowered MPG is due to the cold weather.
That seems very low, even for winter conditions. I've never gotten below 24 mpg on a tank. As others have suggested, I'd start with the usual tune-up / Inspection I/II items.

Vic
vjmvjmvjm is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 03:50 PM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2021, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 73.48 k/86.59 k (15.13%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.