thaigerd Posted April 3, 2006 Share Posted April 3, 2006 I am driving every morning to work about 7am and at this time here in Phuket it's not hot out side. So I just open my window and not using aircondition. My car has 3000cc/V6 engine with 200HP. I guess it needs 20% less gasoline by doing this? What's your experience? Gerd Link to comment Share on other sites More sharing options...
Nawtilus Posted April 3, 2006 Share Posted April 3, 2006 Noisy Link to comment Share on other sites More sharing options...
nonthaburial Posted April 3, 2006 Share Posted April 3, 2006 Many years ago I was involved in a survey carried out by the HKAA. We found that in City conditions such as HK, the fuel saving difference for a car running an AC on full cold and switching off was approximately 30% in savings. But must say, in those days it was thought impractical for a car with an engine size of less than 1200CC to be fitted with AC. Times have changed Link to comment Share on other sites More sharing options...
Tywais Posted April 3, 2006 Share Posted April 3, 2006 (edited) " It is estimated that the air conditioning running at maximum setting can lower fuel efficiency by 5-25%. However, during travelling at high speeds, if the the windows are open, this creates a lot of aerodynamic drag. Thus this may consume more fuel than operating the air conditioner sensibly." Source: http://www.answers.com/topic/fuel-efficiency Edited April 3, 2006 by tywais Link to comment Share on other sites More sharing options...
Thaiboxer Posted April 3, 2006 Share Posted April 3, 2006 You can't drive without AC in central BKK...it's not so much the heat but the air pollution that makes it impossible. I drove without AC for years in southeast Florida and had no problems. The point made about aerodynamic drag with the windows is a valid one; the car in this case acts like a parachute. Link to comment Share on other sites More sharing options...
Gazza Posted April 3, 2006 Share Posted April 3, 2006 They had this to solve on 'Mythbusters' on the Discovery channel a few nights ago. If I remember correctly, they found that it was more efficient to open your windows(not using AC) for speeds under 45-50 MPH (or KM?). But over that, to use AC. Link to comment Share on other sites More sharing options...
Crossy Posted April 3, 2006 Share Posted April 3, 2006 They had this to solve on 'Mythbusters' on the Discovery channel a few nights ago.If I remember correctly, they found that it was more efficient to open your windows(not using AC) for speeds under 45-50 MPH (or KM?). But over that, to use AC. Mythbusters just re-visited this one. The new conclusion, below 50 mph it's better to have the windows open, above 50 the aircon is the best option. Link to comment Share on other sites More sharing options...
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