MINI2

Aslan · Jul 29th, 2003, 10:28 AM

Does having the Auto Air con switched on greatly Effect your Fuel Consumption ????

CYCO · Jul 29th, 2003, 10:46 AM

yes you can expect about 6-8% reduction in fuel consumption and bhp when running manual or auto air con

JonnyThong · Jul 29th, 2003, 01:11 PM

^^^Spot the geek!^^^ If in doubt, FLAT OUT!

iaa · Jul 29th, 2003, 01:28 PM

Quote:

Originally posted by CYCO
yes you can expect about 6-8% reduction in fuel consumption and bhp when running manual or auto air con

If the system has been well designed then the effect on fuel consumption should depend on how hard the system is working, so I would expect the auto air con to result in a fuel saving by not over-cooling.

I must admit that I have not seen a noticeable difference in mpg with the auto air con switched on - still seem to average about 38-40 mpg (UK gallon) in my One. The AC does have a noticeable effect on acceleration though, so I normally turn it off if I'm stuck behind another vehicle and waiting to overtake.

Ian

Prowse · Jul 29th, 2003, 01:29 PM

LOL 6-8% reduction in power.

Sorry, didn't mean to take the ******, but I just can't tell any difference. It may use a little more fuel (if it's very hot weather (so the compressor is running for longer), but you just don't notice it.

dmholmes · Jul 29th, 2003, 06:02 PM

I consistently get 38 mpg with the auto aircon off during highway driving and 32 mpg with it on in moderately hot (80 degrees fahrenheit) weather.

KenL · Jul 29th, 2003, 06:31 PM

One of Newton's laws outlines why it costs in some way.

You'll either use power from the engine or more fuel, something's got to provide it.

I don't have AC in my MINI but have certainly experienced a noticable difference in power/responsiveness in other cars I've driven with AC on.

dinger · Jul 29th, 2003, 06:38 PM

Yes it does slightly effect fuel consumption and it also effects the power on a Cooper S as well.

xplode · Jul 29th, 2003, 10:58 PM

i notice about 2mpg difference in my MC, also stalls easier (i haven't had an ecu upgrade yet).

Jul 29th, 2003, 10:28 AM	#1
Aslan MINI2 Newbie Join Date: May 2003 Local Time: 12:28 AM Posts: 7 Offline	Does the Auto Air con Effect your Fuel Consumption Does having the Auto Air con switched on greatly Effect your Fuel Consumption ????

Jul 29th, 2003, 06:02 PM	#6 (permalink)
dmholmes MINI2 Senior Join Date: Sep 2002 Location: Upstate NY Local Time: 08:28 PM Posts: 356 Offline	I consistently get 38 mpg with the auto aircon off during highway driving and 32 mpg with it on in moderately hot (80 degrees fahrenheit) weather. 2004 Winning Blue Mazda RX-8

Jul 29th, 2003, 06:31 PM	#7 (permalink)
KenL MINI2 Master Join Date: May 2002 Location: Edinburgh Local Time: 12:28 AM Posts: 5,102 Offline	One of Newton's laws outlines why it costs in some way. You'll either use power from the engine or more fuel, something's got to provide it. I don't have AC in my MINI but have certainly experienced a noticable difference in power/responsiveness in other cars I've driven with AC on. Red/Black R56 Cooper

Jul 29th, 2003, 10:58 PM	#9 (permalink)
xplode minimalist Join Date: May 2002 Location: here Local Time: 08:28 PM Posts: 585 Offline	i notice about 2mpg difference in my MC, also stalls easier (i haven't had an ecu upgrade yet). cooper s '05 x brg/white/chrome, cordoba/anthracite/chrome, flik wasp 17x7 x delivered july 26th 2005 cooper '02 replaced x brg/white, R83 white, chrome, cordoba x built june 21st, arrived july 15th on the traviata, delivered july 26th 2002

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Jul 29th, 2003, 10:46 AM	#2 (permalink)
CYCO MINI2 Newbie Join Date: Jun 2003 Location: Warwickshire Local Time: 01:28 AM Posts: 43 Offline	yes you can expect about 6-8% reduction in fuel consumption and bhp when running manual or auto air con

Jul 29th, 2003, 01:11 PM	#3 (permalink)
JonnyThong MINI2 Newbie Join Date: Jun 2003 Location: Worcestershire Local Time: 12:28 AM Posts: 20 Offline	^^^Spot the geek!^^^ If in doubt, FLAT OUT!

Jul 29th, 2003, 01:28 PM	#4 (permalink)
iaa MINI2 Regular Join Date: Jan 2002 Location: Somerset Local Time: 01:28 AM Posts: 99 Offline	Quote: Originally posted by CYCO yes you can expect about 6-8% reduction in fuel consumption and bhp when running manual or auto air con If the system has been well designed then the effect on fuel consumption should depend on how hard the system is working, so I would expect the auto air con to result in a fuel saving by not over-cooling. I must admit that I have not seen a noticeable difference in mpg with the auto air con switched on - still seem to average about 38-40 mpg (UK gallon) in my One. The AC does have a noticeable effect on acceleration though, so I normally turn it off if I'm stuck behind another vehicle and waiting to overtake. Ian

Jul 29th, 2003, 01:29 PM	#5 (permalink)
Prowse MINI2 Master Join Date: Nov 2002 Location: Lancs Local Time: 12:28 AM Posts: 1,550 Offline	LOL 6-8% reduction in power. Sorry, didn't mean to take the ******, but I just can't tell any difference. It may use a little more fuel (if it's very hot weather (so the compressor is running for longer), but you just don't notice it.

Jul 29th, 2003, 06:38 PM	#8 (permalink)
dinger TT or not TT Join Date: Jul 2001 Location: Tunbridge Wells,Kent Local Time: 12:28 AM Posts: 3,075 Offline	Yes it does slightly effect fuel consumption and it also effects the power on a Cooper S as well.

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