Most fuel efficient A/C use?

7192 Views 24 Replies 14 Participants Last post by snowwy66, Oct 23, 2018

GRIMland

Discussion Starter · #1 · Jul 20, 2016

Anyone know what the most fuel efficient way to use the A/C in a first gen Cruze?

I've read blogs saying Max A/C setting (recirculate) is actually more efficient than the regular A/C setting, which was news to me but made sense when explained. Does the Cruze mix hot air from the heater core when the A/C is on and temp control dial is anywhere other than coldest setting? I know different types of cars use different ways to do that, but that way would be the most in-efficient.

When I drive alone I only use A/C when needed, and turn off when accelerating or going up hills. When it starts cooling me off enough I switch it off (press button, keep vent going) then when I warm back up I switch it back on and basically manually cycle it as needed.

Anyone have more fuel efficient ways to operate it from a hypermiler's perspective?

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dougunder

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Joined May 24, 2018

44 Posts

#19 · Oct 22, 2018

For what it's worth we just left A/C time here in MA.
I religiously chart millage, more to head off problems then hyper-milling

I didn't see any difference at all this fill up vs previous. 36 and change like always.
Possible it the winter blend tho.

As an aside the MPG the car says it gets is always off vs my calculation. Anyone else see the same?