EPA ratings for Metros - Fuelly Forums

Click here to see important news regarding the aCar App

Go Back   Fuelly Forums > Fuel Talk > General Fuel Topics
Today's Posts Search Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 01-07-2007, 08:55 AM   #1
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
EPA ratings for Metros

I just discovered that the EPA has 3 completely different sets of ratings for the last generation North American Chev/Geo Metro / Pontiac Firefly (1995-2000).
__________________

MetroMPG is offline   Reply With Quote
Old 01-07-2007, 09:31 AM   #2
Registered Member
 
Join Date: Sep 2006
Posts: 409
Country: United States
I have the same situation with my car! all 4 years are 5.0 liter PGMFI engines, with AOD transmissions. No mechanical changes, but check out my EPA's Highway mileage changes between 27, and 24!! That's like 11%

1986
MPG (city) 18
MPG (highway) 26
MPG (combined) 21

1987
MPG (city) 17
MPG (highway) 27
MPG (combined) 21

1988
MPG (city) 17
MPG (highway) 24
MPG (combined) 20

1989
MPG (city) 17
MPG (highway) 24
MPG (combined) 20
__________________

__________________
red91sit is offline   Reply With Quote
Old 01-07-2007, 09:38 AM   #3
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
That's weird.

Well, I'm heading to teamswift.net to see if anyone there knows if there are any differences between the last 3 years of Metros.
MetroMPG is offline   Reply With Quote
Old 01-07-2007, 09:54 AM   #4
XFi
Registered Member
 
XFi's Avatar
 
Join Date: Mar 2006
Posts: 323
Country: United States
Interesting...I wonder if it has to do with any changing/stiffer emissions requirements. Maybe they changed the ECM programing.

They also could have seen the generous rating with the high EPA reported stats in the first place (compared to how the general public drove these-and what they actually got in MPG).

Let me know what you find out
__________________
--------------
XFi

Join us for the November 22, 2008 Pennsylvania Meet at Cabela's!
https://www.gassavers.org/showthread....634#post121634
XFi is offline   Reply With Quote
Old 01-07-2007, 09:59 AM   #5
Registered Member
 
Join Date: Sep 2006
Posts: 409
Country: United States
Quote:
Originally Posted by XFi
Interesting...I wonder if it has to do with any changing/stiffer emissions requirements. Maybe they changed the ECM programing.

They also could have seen the generous rating with the high EPA reported stats in the first place (compared to how the general public drove these-and what they actually got in MPG).

Let me know what you find out
That would make sense, seeing as they all go down in E.P.A. as the years go by.
__________________
red91sit is offline   Reply With Quote
Old 01-07-2007, 08:23 PM   #6
Registered Member
 
AlexK's Avatar
 
Join Date: Aug 2006
Posts: 42
Country: United States
The EPA periodically revises the way they calculate the gas mileage ratings. You can use them to compare cars of the same year, but not cars across different years. The way they calculate is very arbitrary and unscientific:

http://www.fueleconomy.gov/feg/how_tested.shtml

Look at the last paragraph. That's where they admit that they "adjust" the ratings downward to more closely match the real world. I read somewhere the adjustment is on the order of 20%. They also make up new rules sometimes like the air conditioner must be on, if equipped.
__________________

__________________
AlexK is offline   Reply With Quote
Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
fuel-up entry suggestion fugalaya Fuelly Web Support and Community News 3 04-12-2009 09:29 AM
"Real World" Fuel Economy vs. EPA Estimates Matt Timion Automotive News, Articles and Products 6 06-02-2008 11:23 AM
Hello NEWB here 1989 CRX HF GasSavers_RickyD Introduce Yourself - New member Welcome 4 06-19-2007 11:19 PM
Larger/Heavier Flywheel rh77 General Fuel Topics 14 09-11-2006 12:54 AM
Greetings from Japan. GasSavers_Diemaster General Discussion (Off-Topic) 8 07-13-2006 07:56 PM

» Fuelly Android Apps
No Threads to Display.
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 06:35 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.