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Old 09-29-2018, 09:50 AM   #1 (permalink)
EcoModding Lurker
Join Date: Jul 2011
Location: Fort Myers, FL
Posts: 18

Civic - '01 Honda Civic EX
90 day: 39.15 mpg (US)

Civic Hybrid - '05 Honda Civic Hybrid
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HCH1 +20mpg loss with AC on

I recently purchased a cheap, high mile, manual 2005 Civic Hybrid that I've been bringing back to life. I got the check engine lights and IMA light taken care of and auto-stop is back. It's been running great and mpgs have jumped up considerably.

One issue I've noticed is that the AC absolutely kills my mileage. I can generally achieve +60mpg on my daily work commute without the AC. Meanwhile it's difficult to even hit 40mpg with the AC on. I know air conditioning is going to eat mileage, but that seems incredibly excessive.

Is this consistent with what others are seeing or is there something i should take a look at? I realize "turn the ac off" is going to be the popular answer, but it's really not an option during the summer driving to work in South Florida.

2005 Honda Civic Hybrid Manual
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