I need the answer pls.because some people are just reluctant to turn on their car AC because of the excuse that it drains fuel. to all car owners in the house,mechanics etc.does turning on the AC drain the fuel of a car??

Yea" turning on a/c drains petrol" considerably, a little percentage of petrol. All forms of air conditioning devices uses high power to operate because it runs oxygen which is a coolant" so when you put on your car a/c, there will b more mechanical and electrical load which tends to use power" and the source of the power is petrol . A/c could be said to be luxury when some one is running short of money.

I am waiting on AutosBay's answer (more like copy and paste)

icemann:
I am waiting on AutosBay's answer (more like copy and paste)

I swear I was just about to post that but u beat me to it.

Yes, using car air conditioner increases fuel consumption especially in city driving, it gets worse in traffic and when the outside temperature and humidity is very high thereby requiring more energy to cool the air and dry it before pumping into the vehicle. More energy means more fuel. However in highway driving, the difference becomes negligible.

[quote author=icemann post=28798408]I am waiting on AutosBay's answer (more like copy and paste)[/quote

He has apologized nah and the Robots battery has been removed so we are all safe. Lol]

Whether I used ac or not my car takes 20l for 100km in city driving dt is with stop n go traffic. On paper it does but in practice very negligible difference. I use my ac anytime I want to bc d difference in fuel consumption is negligible.

Fizboy:
Yea" turning on a/c drains petrol" considerably, a little percentage of petrol. All forms of air conditioning devices uses high power to operate because it runs oxygen which is a coolant" so when you put on your car a/c, there will b more mechanical and electrical load which tends to use power" and the source of the power is petrol . A/c could be said to be luxury when some one is running short of money.

no way. oxygen?

donstevico:
I need the answer pls.because some people are just reluctant to turn on their car AC because of the excuse that it drains fuel. to all car owners in the house,mechanics etc.does turning on the AC drain the fuel of a car??

The short answer is - yes it does.

But in most cases not much – it all depends on
how the car is used. Please don't be fooled by
well meaning journalists with only a limited
knowledge of the subject.

For example if you get in your car and drive up
the motorway for a hundred miles at seventy
miles an hour the amount of extra petrol or
diesel used to run the AC is negligible. Indeed if
you were to turn the AC off and drive instead
with a window slightly open to keep cool, you
may well find that the increased drag on the
car would increase the fuel consumption more
than by using the AC button.

On the other hand if your car is mostly used for
short journeys there may be a penalty to pay in
petrol for the comfort of continuous AC. For
example, you get into a stinking hot car and
drive 15 minutes to the supermarket. By the
time you get there the car is comfortably cool
and you leave it in the full sun for an hour
while you do the shop. After the hour the car
has returned to its stinking hot status and you
need to have the AC on full again for the short
journey home. If this is the sort of travelling
this car has to do all its life with only short
journeys then the fuel consumption is
definitely going to deteriorate but after all you
get comfort in exchange. For a few minutes
each day the compressor is going flat out,
taking power from the engine and in addition
both the internal blowers and the electric
condenser fans are working hard to cool the
car down, causing the alternator to work hard
to power them and loading the engine further.
But if this same car is then used for a long
journey, after perhaps ten minutes, once the
internal temperature is reduced comfortably,
the AC throttles itself back – its done the hard
work, now it only needs to keep the car cool
and so now the fuel consumption returns to a
much more acceptable level.

Similarly if on a hot day you drive along and
perhaps note that the fuel consumption on
your onboard computer shows 34mpg and you
turn on the AC and it immediately drops to 28
mpg it would be easy to assume that you were
loosing 6 mpg for the AC. Having read the
previous few sentences you can now work out
that this simplistic assumption is not in fact
correct and that within a few minutes the
computer will show a gradual rise to near the
point at which it started.

I have found little official research on this but
in June 2003 the UK Department of Transport
sponsored some research into fuel economy
on trucks which included the use of AC. This
technical evaluation was done by BTAC/IRTE
(British Transport Advisory Committee/Institute
of Road Transport Engineers) at the MIRA test
track at Nuneaton at the highest speed HGV's
are able to do with their speed limiters which is
56 mph (90km/h). At this relatively low speed
the effects of an open window are nothing like
so serious as they would be at 70 mph, but
even so the effect on fuel consumption of the
AC switched off and the window open was to
increase the consumption by 7% - quite a
staggering increase for such a moderate speed.
With the windows closed and with the AC
switched on, to quote the starchy language of
the official report, “the consolidated data
suggest that air conditioning has a minimal
affect on fuel consumption”.

As I have found so little official research on the
effect of AC on mpg in cars I have put in a little
of my own experience. Our own car is a 2001
VW Golf 1.6 litre, 16 valve petrol engine. We
don't keep fuel consumption records as a norm
except when we go on holiday but then we do it
properly. We fill the tank to the neck and
record the odometer reading, then every time
we fill up we record the amount of petrol we
buy to two decimal places (and for security we
also record the odometer reading). Finally at
the end of the holiday we refill the tank to the
neck and taking the final odometer reading we
calculate the mpg. This is the only truly
accurate way to obtain genuine mpg figures.
In September 2006 we had ten days in France
and Spain driving a total of about 2800 miles.
The majority of the time we were driving on
autoroutes with the cruise control set to 80
mph. The AC was switched on for virtually the
whole holiday. After calculating the mpg it was
a gnats whisker off 44 mpg. I wasn't surprised
at this as the previous holiday with the same
car in 2005 covering about 2000 miles to the
Cote d'Azur and back had given 43.88 mpg,
running again around 80mph and again with
the AC on for virtually the whole time. Now give
that a bit of thought - if we had turned the AC
off, how many mpg could we have expected
with a 1.6 litre petrol engine at 80 mph? Could
we have expected 45 mpg, just maybe but
certainly no more than this at these speeds.
There is quite a good report on "How Stuff
Works" but it is hardly applicable to the UK or
even Europe as the vehicles used in the main
trial are of a type extremely rare on this side of
the Atlantic (one car had an 8.1 litre engine!).
Even the type of AC system is uncommon over
here. Nevertheless the findings are somewhat
similar to those presented here.

A word about fuel consumption figures. These
figures I have quoted above are all in miles per
gallon (MPG) but it must be remembered that
these are for an Imperial gallon as used in the
UK, a gallon in the US is slightly smaller (80% of
an Imperial gallon) so if these seem rather
generous to a reader from the USA then
multiply these by 0.8 to obtain figures that are
common to your experience. A further
complication is the system used in mainland
Europe. This is not just a metric equivalent (km
per litre) but is almost exactly the reverse, it is
the number of litres of fuel required to drive
100 km (litres/100km). This might seem a little
alien to us in the UK or USA but is actually quite
a good way of expressing how much fuel is
required for a trip in your car - in the example
above of our own car on these holidays it
would have needed about 6,4 litres to cover
each 100 km (62.14 miles) of the journey. If you
would like to work it out for your own car then
use 282.481 divided by the UK mpg figure.

When I have been driving recently I frequently
notice that other modern cars, which surely
must have AC fitted, are driving with a window
partly open. Perhaps the driver is smoking and
wishes to get rid of the ash and smoke.

Perhaps the driver is on a very short local
journey and can manage without the comfort
of the AC. But I often wonder how many are
actually on a longer journey and are under the
mistaken impression that they will save fuel
that way.

About 5 years ago I was repairing the AC of a
car at Maidstone when the owner and I heard a
car return to the house next door. The
following is basically the conversation that I
overheard as the owner went to speak to his
neighbour.

Owner: Hello George, did you have a good
holiday?

Neighbour: Oh, Cornwall was lovely, the
weather was great but the journey back was
horrible. The car was so hot and the kids
wouldn't stop moaning.

Owner: If your AC's playing up I've got the
aircon man here working on the Landcruiser
right now, he might have time to look at your
car.

Neighbour: Oh no, its not that - I don't use the
AC 'cos it uses too much petrol.

If it wasn't so sad I could have laughed aloud.
He had a nice Peugeot 406 Estate and guess
which AC compressor this car uses - its a
Sanden SD7V16, the same very economical
compressor as VW fit to our Golf. He had three
kids in the back, the eldest just into his teens so
I expect they and his wife were giving him a
very hard time. I bet he had been driving with
at least one window open and thus was
probably using more fuel than if he had turned
the AC on.

An economy tip. If your car has dual position
or even 4 position Climate Control and if you
are driving without any passengers then if you
set the drivers temperature to that you require
but turn the passenger side to about ambient
temperature and set the fan speed on that side
to the lowest position then you should make a
small saving on fuel.

Copied from:http://www.airconditioningforcars.co.uk/ACpage05.htm

@ the poster above
Are we on the same page

wow.thanks for all your responses

Good Question: 4 Gas Saving Myths

While there are ways to make each gallon really go the distance, there are just as many myths. So which tips don't stretch our gas dollars?

Myth #1: Air conditioning wastes gas

"I was always told not to use air conditioning," said one woman filling up in St. Paul.

However, Consumer Reports and Rdmunds.com tested the effect of AC on our gas mileage. They found that in most modern cars, using the air made little difference when it comes to fuel economy. They also found that riding with the windows down is not as bad as once thought.

Today's cars are more aerodynamic and the drag from open windows had little effect on gas mileage unless you are traveling at highway speeds.

Myth #2: Restarting the engine wastes gas

"I actually do believe that," said one man in St. Paul.

We've been told that turning on and off the car uses more gas than idling for a couple of minutes.

"I always just leave the car running," said another Twin Cities' man.

When our cars had carburetors, that made sense. However, modern fuel injection systems make idling a costly way to wait. The experts say if you plan to idle for more than 30 seconds, turn off the car and you'll save gas.

Myth #3: Premium gas is better for our cars

Mid-grade and premium gas blends are more expensive, so they must be better? Not really. Unless your car requires premium, it is a waste of money.

Even if your car manual says to use premium, you may not need it. Most modern cars have what's called a "knock sensor" that makes unleaded gas just fine for most cars. Contact your car manufacturer to find out if you have one in your engine.

Myth #4: Gas is cheapest on Wednesday

We all know when gas prices tend to go up.

"On the weekends," said a woman in St. Paul.

Many of us fill up midweek and claim Wednesday is the best day as it is smack in the middle of the two weekends.

"I don't know if that's true or not," said one Twin Cities' woman.

It's not. Weekend prices are usually higher but gas prices now fluctuate to such a degree that no one weekday is better than another.

So what does work?

Here are some tips that will actually improve your fuel economy and save you some money.

• Take the weight out of our cars. Those golf clubs or bike racks are burning extra gas.
• Make sure our tires are properly inflated.
• When we're on the highway use cruise control. That can add 7 percent to our fuel economy.
• Avoid driving with a lead foot. Speeding and quick stops or starts are big gas guzzlers.

Source: https://answers.yahoo.com/question/?qid=20080606055804AAafEXP

chillex8:
@ the poster above
Are we on the same page

From the long epistle, which I didn't bother to read you wld know he's very far away.

DECOtech:


From the long epistle, which I didn't bother to read you wld know he's very far away.

autosbay is a copy n paste robot.
Watin concern us with gas being cheap on wednesday