I understand the when u use ur air conditioning in ur car u spend more gas then when u don't, is that true?

Answer 1

depends on the car, if it has a carburetor the answer is probably yes. if your car has fuel injection the answer is no. as the other people have said watch myth busters

Answer 2

The above answers that say no are clueless. Of course using the A/c uses more fuel. There is no way that it cannot. You are using a mechanical driven compressor to compress a refrigerant gas from a gas to a liquid with a pressure differential of over 200 PSI,,from high to low side pressures continuously.
For those who wish to argue...turn off the A/C in your house and see if the electric bill does not go down. Where do you think the power to run that compressor comes from???
At very high unspecified speeds due to variations in cars and trucks there could be an increase in drag with windows open, but in normal day to day commuter driving this is irrelevant...PERIOD!
YES, running the compressor and electric fan motor does increase fuel consumption!!

Answer 3

The air conditioner puts a load on your engine, causing it to use a bit more petrol, but when you don't use the A/C, you usually have some windows open, which increases the drag and also reduces your mileage. The net difference is not enough to be worth putting up with the noise and discomfort. Use the A/C.

Answer 4

Yes, because the engine has to rotate a compression pump with a belt that compresses and expands the freon (or whatever cooling gas). Thus the engine uses more energy and needs more fuel.

The most fuel efficient way to drive is with the windows up and no AC because this minimizes resistance. The happy medium is to drive with the windows down and no AC.

Answer 5

It is partially true.

When using the air conditioner, more power is drawn from the engine, so it does use more gas, if the windows are all up.

If you turn off the air conditioner, and roll down the windows, the extra wind resistance will use even more gas in many cases.

Answer 6

When you run the air conditioner you are running a compressor that compresses the refrigerant. This takes energy from the engine - causing it to work harder. This means the engine consumes more fuel because in additon to moving the car it also has to run the a.c.

It does consume more energy to run the a.c.

It does not consume more energy to heat the car in winter because the heat comes from engine waste heat that would otherwise be radiated to the outdoors.

Answer 7

Use the vehicle's air conditioner sparingly – using the air conditioner in stop-and-go traffic can increase fuel consumption by as much as 20%.

Answer 8

yes and no

It is more fuel efficient to use the AC when you are driving at high speed because a sealed vehicle has less drag than one with open windows.

If you are driving at slow to moderate speeds where aerodynamics do not play a role, then it's more efficient to roll down the windows instead of using the AC

And driving with your tailgate down does not improve fuel efficiency.

Answer 9

thats not really true.......when you have your a/c on it uses pulleys and other mechs on your vehicle but it doesnt really cut the gas mileage it can however have an effect on power due to your motor working hard.....it can effect gas comsumption slightly at an idle and stop and go traffic very slightly...but at freeway speeds its better to have the windows up and a/c on.......thats a very old and bad wives tell

Answer 10

Nope. Its actually a little more fuel efficient to drive with the AC on on a hot day then it is to have the windows wide open.