which one has better FC? AC on or windows down?

NewAgeSensitiveBoy SG

I always hear ppl say on AC will increase the FC. However when we off the AC and wind the window down, the air rushing in will increase the drag, hence increasing the burden on the engine, thereby increasing FC also....

so which is which? to save fuel, do we on AC or wind window down?

kopiosatu SG

switch on the a/c but u dun have to blast it to antarctica temperatures.

n0x SG

switch off aircon and wind down window during city driving...

switch on aircon and wind up window when cruising on expressway...

NewAgeSensitiveBoy SG

thks…. i did a search yesterday and it says that any speed below 50km/hr wind down window…. abv, on AC and wind up window…. hope it helps…..

NoobBOY SG

Do u mean Fuel Consumption Confused

NewAgeSensitiveBoy SG

huh? FC = fuel consumption, AC = Air con

longgone SG

Yeah, AC on is best. Unless you superhero can drive in singapore heat with windows up and AC off.

mh2 SG

you be surprise ppl do that

xXhuskyXx SG

window up AC off...that way u can reduce drag and save the FC on no aircon, end result is that u might sweat like nobody business Laughing

alwaysdisturbed SG

mythbuster did a test on it.

if i didn't remember wrongly. at low speed, its better to wind down windows.