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Sedans Honda Civic Honda Civic Real World MPG
2058 messages, Last post on Aug 26, 2009 at 6:19 PM
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Replying to: ras314 (Jun 24, 2009 2:20 am) Have you tried using the fuel flow rate display on the ScanGauge (I think it's GPH (gallons per hour)) instead of the instant MPG? - Flat stretch of road - Enable cruise control - View the fuel flow rate display, which "should be" somewhat steady - Turn A/C on and see the effect Maybe looking at the fuel flow rate instead of instant MPG for this type of experiment might help? ...kl...
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Replying to: kltron (Jun 26, 2009 6:37 am)   Understanding that even among A/C's there are subtle to massive effect differences, I was struck by the fact that NONE of the oem owners manuals I have or ever looked at even address the procedure of stabilizing the A/C, setting the fan speed to #1 and adjust cooling for maximum mpg !! On Civic's setting the air flow to recycling air. Certainly no one addresses not cycling it on an off and its effects.
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Replying to: ruking1 (Jun 26, 2009 7:32 am)  throughout the trip, usually to 41 or 43mpg (sometimes less if the car is in a bad mood...sometimes more for the right conditions). BTW...9999 in the ScanGauge comes up because some cars turn off the fuel injectors when coasting (especially long downhill stretches or if using the engine to slow the car down) and the tranny is turning the engine. The ScanGauge doesn't know if your car turns off the fuel injectors or not, so there's a way to "tell" it using a threshold value which will vary by model of car. 9999 basically means "fuel off" if your car has that capability. This may apply to manual transmissions only. Anyway, I mentioned before that it's frustrating that the A/C comes on in the Civic for the defroster. I'm sure there are times when it does not need to--I hardly ever used the A/C with the defroster in my old Integra. Then in the Civic if you switch from defrost to something else, the A/C stays on until you shut off the fan and turn it back on even if the green A/C light is not on. So you could be running the A/C and not even know it!
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Replying to: kltron (Jun 26, 2009 8:55 am) For me, another reason why I like the A/C controls and not the "climate-Temperature" controls. On the "climate-temperature" control, it would indeed be oxymoronic for you to hit the defroster (without A/C) and the winshield actually gets more foggy !!?? (with the resulting safety consequences?) So I think they opted to go for MANDATORY operation of the A/C in this (small) regard. |
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| Purchased new in February. After 6900 miles of mostly highway driving the MPG has worked out to 37.69. Very happy with the Civic. | |
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Please bear with me as I'm new here and got a new car for the first time last week. I bought the 2009 Civic LX and after one week I put in a tank of gas and did plenty of highway driving. I calculated the mpg and it was barely over 20 mpg!  Yes, I could've been driving slower but I'm no speedster and I did have the A/C on a very low setting. I've heard that as the car gets used more the mpg will improve. But I wasn't expecting anything this low. Any ideas? Many thanks in advance! |
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Replying to: wcooper (Jul 12, 2009 4:50 pm) I have 28k on a 2008 ex auto. I bought with high expectations from listening to sales associates and bloggers, and have been extremely disappointed with this aspect of the car.......
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Replying to: mjsten (Jul 13, 2009 10:41 am) Sorry for my previous post. I will check on my city driving mpg because that's where 90% of my driving is done. Thanks for your help!
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Replying to: wcooper (Jul 12, 2009 4:50 pm) 20mpg does not sound realistic, you'd have to drive the car incredibly hard (abuse it) to get that kind of fuel economy reading. 2 weeks ago I bought a new 09 Civic LX AT. So far I've filled up twice with a half-full tank and got readings of 33 and 31.5. Then I did a road trip and did a full fill-up and got 37.5 mpg. I would try filling the tank up again and make sure it is full when you start with a full tank. Then drive it down to the halfway mark on the gauge (the indicator bar will be right next to the little fule pump image). You should get at least 200 miles on a half-tank. If you're not, there's either something mechanically wrong with the car or you are really driving it to hard. |
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Replying to: wcooper (Jul 13, 2009 1:33 pm) |
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