How Many MPG Does The A/C Decrease? - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 13 (permalink) Old 04-04-2011 Thread Starter
Rookie
 
III Icon III's Avatar
 
Joined: Mar 2011
Location: Colleyville
Posts: 11
 
Exclamation How Many MPG Does The A/C Decrease?

If the temperature is set at coldest, how many MPG does my mustang decrease by with the A/C on? I'm trying to figure out whether it uses a significant amount of gas or not. Thanks!

III Icon III is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 04-04-2011
MACH I Member
V6 Member
 
Derfdog15's Avatar
 
Joined: Apr 2010
Location: Fort Pierce
Posts: 2,882
 
Send a message via MSN to Derfdog15 Send a message via Yahoo to Derfdog15
from what i have read/noticed it uses the same amount of gas as driving with the windows down. the most economically gas saving option seems to be vent.


2003 Redfire V6,
Show: Smoked everything, cobra front bumper, gt rear bumper, rear decklid and lower valence blackout with black mustang letters, 5% rear front 15%, black 98 Cobra rims front, 95 Cobra R rear black with chrome lip, black scoops and spoiler and exhaust tips

Go: CAI, True Duals with flowmaster super 44's, Bama Tune, full suspension (lowered, 8.8, 4.10s, UCA, LCA, springs, CC plates)
Derfdog15 is offline  
post #3 of 13 (permalink) Old 04-04-2011
Redlyr
Guest
 
Redlyr's Avatar
 
Posts: n/a
At speed the A/C does not draw a significant enough amount of power to degrade gas mileage. Your engine is making excess power at most speeds that the A/C uses. It might pull an extra 10% of power.
As Dog said, you burn more fuel due to air resistance created by rolling the windows down than you do with the A/C on. It might signify 0.5mpg or so. I have saw no major changes in fuel consumption in my '01 with the A/C on or off.
 
post #4 of 13 (permalink) Old 04-04-2011 Thread Starter
Rookie
 
III Icon III's Avatar
 
Joined: Mar 2011
Location: Colleyville
Posts: 11
 
Quote:
Originally Posted by Derfdog15 View Post
from what i have read/noticed it uses the same amount of gas as driving with the windows down. the most economically gas saving option seems to be vent.
Sorry but just got the mustang last week, how do I vent?
III Icon III is offline  
post #5 of 13 (permalink) Old 04-04-2011
MACH I Member
V6 Member
5.0L Member
 
metalman302's Avatar
 
Joined: Dec 2010
Location: Phoenix
Posts: 2,907
 
Iirc back when I was keeping track it used about 2 mpg more. If you can clearly feel the additional load on your engine when the ac clutch kicks in....... that's using a fair amount of power.
metalman302 is offline  
post #6 of 13 (permalink) Old 04-04-2011
Redlyr
Guest
 
Redlyr's Avatar
 
Posts: n/a
Quote:
Originally Posted by III Icon III View Post
Sorry but just got the mustang last week, how do I vent?
You turn the controls to the outside air, not the A/C. First setting to the left of off.
post #7 of 13 (permalink) Old 04-04-2011
GT Member
V6 Member
5.0L Member
 
StalkerStang's Avatar
 
Joined: Apr 2002
Location: Surprise
Posts: 2,137
 
Send a message via Yahoo to StalkerStang
Quote:
Originally Posted by III Icon III View Post
how do I vent?
lol, wow there are many ways to do that!

Back on topic, I say it depends on the terrain and spped you are driving. Flat roads at highway speed, you probably won't notice a decrease at all. Start adding some hills, traffic, elevation change, turns, etc. then it will start to drop....

Jesse Berger
90 LX, Previous 4 cyl.
408W In the Works
TW FAC's, Jay Allen cam, Super Victor

2001 V6 5 Speed Daily Driver
Windstar Intake, Dual Exhuast, CAI, Headers
Best ET: [email protected] mph (on 18's)
StalkerStang is offline  
post #8 of 13 (permalink) Old 04-04-2011
MACH I Member
V6 Member
 
Derfdog15's Avatar
 
Joined: Apr 2010
Location: Fort Pierce
Posts: 2,882
 
Send a message via MSN to Derfdog15 Send a message via Yahoo to Derfdog15
still for most daily driving applications vent should be fine and even A/C would be fine as long as its not stop and go, i just do vent tho with the music pounding and the tinted windows up, works great xD

2003 Redfire V6,
Show: Smoked everything, cobra front bumper, gt rear bumper, rear decklid and lower valence blackout with black mustang letters, 5% rear front 15%, black 98 Cobra rims front, 95 Cobra R rear black with chrome lip, black scoops and spoiler and exhaust tips

Go: CAI, True Duals with flowmaster super 44's, Bama Tune, full suspension (lowered, 8.8, 4.10s, UCA, LCA, springs, CC plates)
Derfdog15 is offline  
post #9 of 13 (permalink) Old 04-04-2011
BOSS Member
V6 Member
 
davidcseifert's Avatar
 
Joined: Dec 2009
Location: White Hall
Posts: 3,775
 
i always ride with the windows down (assuming its not freezing outside i do), and get better mileage when i do usually and that was even before i saw this lol

YouTube - Mythbusters- A/C vs. Windows MiniMyth

BV heads, P&P lower, windstar upper, comp 218/226, 4.2 bottom end, 3k stall, flow 40's, O/R x-pipe, Pacesetter lt's, Xcal2, 65mm tb, CAI, 8.8 w/ 3.73's, MM LCA's
coming soon: blower cam and intercooled M112
dealer for Ortiz Performance; tunes, cams, etc. PM me!
davidcseifert is offline  
GT Member
V6 Member
5.0L Member
 
StalkerStang's Avatar
 
Joined: Apr 2002
Location: Surprise
Posts: 2,137
 
Send a message via Yahoo to StalkerStang
Quote:
Originally Posted by Derfdog15 View Post
still for most daily driving applications vent should be fine and even A/C would be fine as long as its not stop and go, i just do vent tho with the music pounding and the tinted windows up, works great xD
Try doing that in Phoenix durring summer. Its 110+ outside, and 125+ in the car.

Jesse Berger
90 LX, Previous 4 cyl.
408W In the Works
TW FAC's, Jay Allen cam, Super Victor

2001 V6 5 Speed Daily Driver
Windstar Intake, Dual Exhuast, CAI, Headers
Best ET: [email protected] mph (on 18's)
StalkerStang is offline  
Redlyr
Guest
 
Redlyr's Avatar
 
Posts: n/a
My old Toyota 4x4 didn't have A/C. It gets around 105-110 here in the summer. My truck was a sweat box driving to and from school.
MACH I Member
V6 Member
 
Derfdog15's Avatar
 
Joined: Apr 2010
Location: Fort Pierce
Posts: 2,882
 
Send a message via MSN to Derfdog15 Send a message via Yahoo to Derfdog15
lol i usually roll with the windows down on the way to and from school just so i can play really loud metal and annoy all the little rap kids. Otherwise though i keep the windows up when im going over 50, the gas either way isnt that much of a difference.

2003 Redfire V6,
Show: Smoked everything, cobra front bumper, gt rear bumper, rear decklid and lower valence blackout with black mustang letters, 5% rear front 15%, black 98 Cobra rims front, 95 Cobra R rear black with chrome lip, black scoops and spoiler and exhaust tips

Go: CAI, True Duals with flowmaster super 44's, Bama Tune, full suspension (lowered, 8.8, 4.10s, UCA, LCA, springs, CC plates)
Derfdog15 is offline  
PONY Member
V6 Member
 
robb15033's Avatar
 
Joined: May 2010
Location: Leesburg, Va
Posts: 408
 
Compared to driving with both windows all the way down, nothing. Its the same mpg lost. How much, I dont know. Sorry.

'97 3.8 Pacific Green
Modified~
1996 SVT COBRA
White
robb15033 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On

 
For the best viewing experience please update your browser to Google Chrome
 


Search Engine Friendly URLs by vBSEO 3.6.1