Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)

7 Series - E38 (1995 - 2001)

Reply
 
Thread Tools Display Modes
  #1  
Old 04-09-2012, 07:12 PM
Mikeman3502000 Mikeman3502000 is offline
Registered User
Location: Montreal
 
Join Date: Apr 2012
Posts: 17
Mein Auto: 1995 740i
Exclamation Very bad city MPG, Good highway MPG



Why am i doing great milage on the highway but very very poor in the city? I recently changed the gas tank, O2 sensors, A/C compressor/dryer/aux fan, but dont understand why the very poor milage in the city. I average 210kms or 130 miles with $30 gas @ 4.25/gallon. I use 89. Is this normal for a 1995 740I? I drive very slow and barely use the a/c. I noticed my ambient temp sensor is off reading almost 100 at times, but dont know if this can be a cause... Another thing i should add is that I bypassed the cooling going to the heater core cuz it was leaking...
Reply With Quote
Advertisement
  #2  
Old 04-14-2012, 05:44 PM
BigBoy740il's Avatar
BigBoy740il BigBoy740il is online now
Officially Welcomed to the 'Fest
Location: Arizona
 
Join Date: Jan 2012
Posts: 256
Mein Auto: 1989/1991 E30; 2000 E38
Depending on the year, BMW requires either 91 or 89 octane fuel. You can run lower octane fuel, but the retarded engine timing results in less HP and increased fuel consumption. If you check the epa mpg rating for the E38 you'll see that it gets about 16 city and 23 highway. Combined, that's about 19 mpg. You're getting 130 miles on 7.05 gallons. This translates to about 18.44 mpg. Make sure your plugs and air filterare fresh. Remember Mike, we're not driving salad eating chicks (Hondas or Toyotas). These girl are big and need a little persuasion to get going.
Hope this helps. :beer:
__________________


Big Boyz with Bad Toyz.

Last edited by BigBoy740il; 04-14-2012 at 06:01 PM.
Reply With Quote
  #3  
Old 04-14-2012, 07:15 PM
QSilver7's Avatar
QSilver7 QSilver7 is offline
Officially Welcomed to the 'Fest
Location: Northeast Indiana
 
Join Date: Aug 2008
Posts: 5,863
Mein Auto: 1997 740iL / 2006 X5 4.4
The conversion from kilometers to miles and from liters to imperial gallons (which is different from US gallons) is too much for my brain to wrap around tonight.

But just one slight correction about fuel octane...BMW "recommends" either 89 or 91 AKI (depending on engine) but REQUIRES a minimum of 87 AKI. This oft times confuses owners. There's a minimum "requirement"...and a BMW "recommendation" for fuel consumption and engine performance.

__________________
Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg

Last edited by QSilver7; 04-14-2012 at 07:18 PM.
Reply With Quote
  #4  
Old 04-15-2012, 11:19 PM
Mikeman3502000 Mikeman3502000 is offline
Registered User
Location: Montreal
 
Join Date: Apr 2012
Posts: 17
Mein Auto: 1995 740i
Thanks for the info, and yeah we pay more in gas but less in insurance compared to newer more efficient cars. But you will never get to feel the ultimate driving machine!
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)
Today's Posts Search
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 -7. The time now is 04:58 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms