PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > General Forums > General PT Cruiser Discussions

PT Cruiser Forum

Advertisements
MPG: better w/AC on or w/AC off & windows open?

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 31 May 2008, 11:06 am
prettybluewoody's Avatar
Senior Cruiser
 
Join Date: Jun 2007
Location: Northern Virginia, USA
Posts: 1,093
Cool MPG: better w/AC on or w/AC off & windows open?

Okay, it's summer, we all wanna turn on the AC but we ALSO wanna get great gas mileage. So which way will get the better mileage, the windows closed/AC on or windows open/AC off? Figuring that open windows create drag which reduces the MPG, but the AC certainly uses engine power (read: gas!), my assumption would be that at slower speeds the open windows option would make more efficient mileage, but at higher speeds it'd be the other way around.

So: at, say, 30mph, 40mph, 50mph, 60mph and 70mph, does anybody have anything better than my simple slower w/open windows vs. higher speeds w/AC guesswork?
__________________
prettybluewoody
2003 Limited Edition PT Cruiser:
Electric blue with Moss Motors 2-tone ABS woody panels, assorted woody touches here and there and a custom electric blue keyfob
Reply With Quote
  #2 (permalink)  
Old 31 May 2008, 12:25 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,744
Default Re: MPG: better w/AC on or w/AC off & windows open?

Myth Busters already did it....

Annotated Mythbusters: Episode 22: Boom Lift Catapult, A/C vs. Open Windows
__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
Reply With Quote
  #3 (permalink)  
Old 01 Jun 2008, 07:04 am
Fresh Cruiser
 
Join Date: Feb 2008
Posts: 24
Default Re: MPG: better w/AC on or w/AC off & windows open?

Quote:
Originally Posted by CREWZIN View Post
Yup, seen this one. The did one experiment about pick up trucks as well: open box tail gate up, tonneau cover, or open box tail gate down.
Reply With Quote
  #4 (permalink)  
Old 01 Jun 2008, 04:43 pm
Roadcuda's Avatar
Young Cruiser
 
Join Date: May 2008
Location: Central CT
Posts: 50
Default Re: MPG: better w/AC on or w/AC off & windows open?

Anytime I've run with my a/c I've seen little if any difference in the mpg I get. But, from what I've seen here on the wide range in mpg that people get that may be a hard question to get a good answer for. I think it all depends on how you drive your car to begin with. I try to drive with a light foot, so I get decent mileage. If you have a heavy foot you may not do as well. I think the only way you'll know for sure is to experiment with it on, or off, and see what happens.
Reply With Quote
  #5 (permalink)  
Old 01 Jun 2008, 05:21 pm
ucantcme's Avatar
Senior Cruiser
 
Join Date: Aug 2007
Location: Wixom, Michigan
Posts: 1,486
Send a message via AIM to ucantcme Send a message via MSN to ucantcme Send a message via Skype™ to ucantcme
Default Re: MPG: better w/AC on or w/AC off & windows open?

I drive with my windows down when it's nice out. The joy of having the wind blow at your face is sweet. Beats A/C anyday.
__________________



My Baby:
01' Taupe Limited PT Cruiser w/ rear spoiler, Drop in K&N Air Filter, Limo tint all around, blue neon interior, blue LED windshield nozzles,
In-dash CD/DVD/Radio made by Jensen, Vent Visors, Chrome Antenna Bezel, Chrome Grille inserts, Dual Catback Exhaust, Scan Gauge II,
back-up camera, and a system containing 2 Lanzar 15" subwoofers and an MA Audio 1800watt amplifier.

Check me out on Car Domain!
Reply With Quote
  #6 (permalink)  
Old 01 Jun 2008, 05:38 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,744
Default Re: MPG: better w/AC on or w/AC off & windows open?

Quote:
Originally Posted by ucantcme View Post
I drive with my windows down when it's nice out. The joy of having the wind blow at your face is sweet. Beats A/C anyday.
That works up north Ron, but it's above 90 degrees here all week already this year and even at night it's warm and humid. Early morning is the only time for an open window without the AC.
__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
Reply With Quote
  #7 (permalink)  
Old 01 Jun 2008, 05:42 pm
ucantcme's Avatar
Senior Cruiser
 
Join Date: Aug 2007
Location: Wixom, Michigan
Posts: 1,486
Send a message via AIM to ucantcme Send a message via MSN to ucantcme Send a message via Skype™ to ucantcme
Default Re: MPG: better w/AC on or w/AC off & windows open?

I've lived in New Orleans and in Guam for a total of 5yrs of my life - I know the hot and humid scenario. But still, i enjoyed the windows in the ajar position!
__________________



My Baby:
01' Taupe Limited PT Cruiser w/ rear spoiler, Drop in K&N Air Filter, Limo tint all around, blue neon interior, blue LED windshield nozzles,
In-dash CD/DVD/Radio made by Jensen, Vent Visors, Chrome Antenna Bezel, Chrome Grille inserts, Dual Catback Exhaust, Scan Gauge II,
back-up camera, and a system containing 2 Lanzar 15" subwoofers and an MA Audio 1800watt amplifier.

Check me out on Car Domain!
Reply With Quote
  #8 (permalink)  
Old 01 Jun 2008, 05:50 pm
Fresh Cruiser
 
Join Date: Feb 2008
Posts: 24
Default Re: MPG: better w/AC on or w/AC off & windows open?

Quote:
Originally Posted by ucantcme View Post
I drive with my windows down when it's nice out. The joy of having the wind blow at your face is sweet. Beats A/C anyday.
I agree. The only time I use the A/C is to defog the windows.
Reply With Quote
  #9 (permalink)  
Old 01 Jun 2008, 05:53 pm
ucantcme's Avatar
Senior Cruiser
 
Join Date: Aug 2007
Location: Wixom, Michigan
Posts: 1,486
Send a message via AIM to ucantcme Send a message via MSN to ucantcme Send a message via Skype™ to ucantcme
Default Re: MPG: better w/AC on or w/AC off & windows open?

Quote:
Originally Posted by TommyNiagara View Post
I agree. The only time I use the A/C is to defog the windows.
x2!!!!
__________________



My Baby:
01' Taupe Limited PT Cruiser w/ rear spoiler, Drop in K&N Air Filter, Limo tint all around, blue neon interior, blue LED windshield nozzles,
In-dash CD/DVD/Radio made by Jensen, Vent Visors, Chrome Antenna Bezel, Chrome Grille inserts, Dual Catback Exhaust, Scan Gauge II,
back-up camera, and a system containing 2 Lanzar 15" subwoofers and an MA Audio 1800watt amplifier.

Check me out on Car Domain!
Reply With Quote
  #10 (permalink)  
Old 01 Jun 2008, 05:58 pm
prettybluewoody's Avatar
Senior Cruiser
 
Join Date: Jun 2007
Location: Northern Virginia, USA
Posts: 1,093
Default Re: MPG: better w/AC on or w/AC off & windows open?

Not me: if it wasn't for AC, I'd melt! I'd rather do without a heater in the car in winter than no AC in summer.
__________________
prettybluewoody
2003 Limited Edition PT Cruiser:
Electric blue with Moss Motors 2-tone ABS woody panels, assorted woody touches here and there and a custom electric blue keyfob
Reply With Quote
Reply


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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
'Door open' lights breakshift Tech & Performance Forum 11 24 Apr 2012 05:23 pm
Door open lights breakshift General PT Cruiser Discussions 0 06 Jan 2008 10:57 pm
Pop the rear hatch open using the remote zapwizard Exterior Accessories Forum 4 28 Jun 2007 08:32 pm
Guide: 2006 Power windows and Sunroof always on. zapwizard General PT Cruiser Discussions 3 21 May 2007 09:23 am
Convertible passenger side windows don't go down gipper65 General PT Cruiser Discussions 4 14 May 2007 12:39 pm


All times are GMT -5. The time now is 04:03 am.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors