Very inefficient air conditioning

Asked by Aug 16, 2009 at 02:09 PM about the 1999 Honda Civic

Question type: Maintenance & Repair

My 1999 civic can get about 40 mpg on the highway with a light load and no air conditioning.  However, if I turn on the air conditioning on a similar stretch of highway, my MPG often doesn't even break 30.  I don't really know that much about cars but I haven't seen this big of a contrast in gas mileages in the past while driving this car (I used to regularly get 30+ mpg on the hiway even with air conditioning.)

Would it be about time to look into maintenance on the AC?  Btw, I got this car used from a relative.

5 Answers

55

Just check if your problem is listed here: http://www.hondaproblems.com/Civic/

195

the ek 6th gen civics have small engines and therefore dont take air con very well. everyone i know with air-con models can feel the power drop when they turn it on. small engines often respond more to changes like air con then the bigger engines.

25

What is your engine?

1,675

i feel you bro...get the AC and your engine checked for leaks or stuff...my AC's good even on the freeway but i spend less on gas when the AC is turned off...dont put the pedal to the metal...it consumes more gas even if the AC is turned on...

1,675

i feel you bro...get the AC and your engine checked for leaks or stuff...my AC's good even on the freeway but i spend less on gas when the AC is turned off...dont put the pedal to the metal...it consumes more gas even if the AC is turned off...

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