A/C extra fuel consumption

[nielshm]

Since my car was new, I've pretty much had the A/C turned on 24/7. Some how I got the it turned off last week, and my milage begins to improve.

My daily driving to work is 14 miles, starting with a cold engine. Every single day my average is 49 mpg when I turn off the car.

With the A/C turned off, things look quite different: The daily average has gone up to 55 mpg, a 12% improvement.

I know that A/C does use extra fuel, but 12%? I have only been "testing" for 5 days, and need to do full tanks and do calculations my self, but still?

Many of you guys drive hybrids, do you experience the same difference, or does the Battery help to run the A/C?

[furtula]

With my 1.6 Auris on mixed roads i get improvement of a whole 3.3% if the AC is off, must be due to higher displacement of the engine.

47 MPG in rural, 43 in city due to my grandma foot. I envy your numbers.

[RUToyota]

You certainly don't need A/C on all the time...use it frequently YES...as it keeps the system in good condition.

As for the extra fuel useage.?...minimal surely and well worth the "cost" for the benefit it gives WHEN you need it.

[Parts-King]

I don't use AC very much, I do run it weekly to ensure it works when needed. Just imagine not having AC and having to have your windows down in order to keep cooler, just think what that would do to your MPG   

 

[dieseldane]

I've not really noticed any systematic impact on fuel economy on my 2010 Auris. If there is any, it's probably lost in the noise of all other factors.

[ArranB]

On 2/10/2018 at 12:06 PM, Chriss27 said:

Oops sorry ev mode 😁

 

On 3/13/2018 at 8:42 AM, Konrad C said:

Not special tool needed. You can use anything to push the piston back. The rear brakes need special tool, if the parking brake uses the pads/disc. The rears need the wind-back tool and the kit need to have reverse for the left wheel.  

 

On 6/13/2018 at 6:48 AM, nielshm said:

Since my car was new, I've pretty much had the A/C turned on 24/7. Some how I got the it turned off last week, and my milage begins to improve.

My daily driving to work is 14 miles, starting with a cold engine. Every single day my average is 49 mpg when I turn off the car.

With the A/C turned off, things look quite different: The daily average has gone up to 55 mpg, a 12% improvement.

I know that A/C does use extra fuel, but 12%? I have only been "testing" for 5 days, and need to do full tanks and do calculations my self, but still?

Many of you guys drive hybrids, do you experience the same difference, or does the battery help to run the A/C?

On the hybrid the Battery runs the entire A/C system. There’s no physical connection to the engine for the purpose of driving the compressor etc 

[nielshm]

I've done 2 full tanks and had aircon turned off 75% of the time. Full tank average is 50 mpg, for me and my car it's 6-7% improvement. 

It's about 40 miles extra distance per tank of fuel.