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Honda Civic Hybrid MPG-Real World Numbers

475 messages,  Last post on Dec 04, 2009 at 3:11 PM

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What is this discussion about? Honda Civic, Hybrid Cars, Fuel Efficiency (MPG), Sedan

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#411 of 475 Re: Low Miles Per Gallon [steveaa123] by donga Jul 18, 2008 (10:09 am)
Replying to: steveaa123 (Jul 18, 2008 8:25 am) If you look at my posts, we are having the same issue with our 2006 hybrid. At first I was sure something was up with the car because the mpg drop happened immediately after servicing by a dealer. I did have new tires, Pirelli P4, put on on the way there, but I swear the mpg was normal during the 15 mile drive to the dealership. But, after all this, I do believe the tires are responsible for a drop in mileage, although I find it hard to believe it can be a 20% difference, which is what we've experienced. Like I told someone who said the tires were the cause, I should have bought a standard Civic and put the factory "hybrid" tires on the car and saved the $2,000 difference. I do notice the automakers are putting road tires on most SUV's nowadays in an attempt to increase mileage ratings, I would assume, and that, to me, supports the whole idea of rolling resistance, which is a big factor in bike riding.   I would like to find a reliable tire expert who can advise the best tire for max mpg, but no luck so far If you hear of a source or get some info on a good mpg tire, let me know.
#412 of 475 Best car; worst service by aue Jul 21, 2008 (7:20 pm)
Just got the over-lubed telescopic steering column recall done on a 2006 HCH, which involved replacing the brake light switch. Suddenly the AC didn't work. Although the dealer didn't admit screwing up, they got a diagnostic message to reset the computer and, voila! the AC works again. What a crappy car! Buy a Prius.
#413 of 475 Tires and mileage by steversk Aug 11, 2008 (3:42 pm)
I just found an interesting report by the transportation research board. It's 178 pages and titled Tire and Passenger Vehicle Fuel Economy. It covers several tire factors that affect rolling resistance and therefore, gas mileage. One is the speed rating. It seems that the lower the speed rating the better the mileage. The tires I got on my 08 HCH were dunlop with S speed rating (104 mph). The other interesting factor was the tread. It acually turns out that the less tread the less rolling resistance. As a tire rolls down the road it deforms and then recovers. This process is known as hysteresis. As the tire wears there is less rubber to deform. That is why many people notice a drop in mileage right after thay replace their tires. It also is why putting more air in the tire increases the gas mileage. The tire deforms less and so there is less hysteresis and less rolling resitance. So you will acually get better mileage if you buy a tire with less tread. However the report does point out that the little savings in gas mileage Is probably eaten up by having to buy tires more often. The original Dunlops that came on my HCH are just about worn out after 16,000 miles and have no treadware warranty. I will probably look for a better wearing tire, even if it means a little less gas mileage. As the report point out as the tire wears your mileage will improve.
#414 of 475 Current mileage by steversk Aug 11, 2008 (3:49 pm)
I now have over 16,000 on my 08 HCH and the last ten tanks of gas have averaged 53 mpg. Low tank was 49.8 and high was 55.2. I hope the milage doesn't go down too much when I change the tires.
#415 of 475 mileage history by Frungy Aug 22, 2008 (9:09 am)
I just bought my HCH a few months ago- I was getting about 42 mpg on it initially. My commute is only 10 minutes on city roads, so probably the worst-case scenario, though I do live in a warmer climate so the engine isn't running cold too long. Over time it slowly got worse, until 2 weeks ago when it hit 39 mpg. I ended up putting air in my tires (they were down to like, 22 psi or something) and now I'm back up at 45 mpg. I was pleasantly surprised at the results!
#416 of 475 Teach me the tricks! by mimabro Aug 26, 2008 (7:07 pm)
I bought a 2005 HCH in April and was told my top mpg would be 45... but to my surprise, on average I'm getting 48 mpg and at the highest, I've gotten 59 mpg. I try to go easy on the gas, travel within 5 mph of the speed limit, not use the ac, keep off the defrost so the auto stop turns on. Any other suggestions? I drive an AT... but wish it was a manual! I'd love to average out around 50 mpg. Replies to this message: thegraduate (Aug 27, 2008 6:27 am) mimabro (Aug 27, 2008 8:42 pm) thegraduate (Aug 27, 2008 9:19 pm) and 1 more...
#417 of 475 Re: Teach me the tricks! [mimabro] by thegraduate Aug 27, 2008 (6:27 am)
Replying to: mimabro (Aug 26, 2008 7:07 pm) Where do you live that you can stand it in August with no A/C? I'll do a lot of things to help my mileage, but sweating through my clothes isn't one of them. Replies to this message: mimabro (Aug 27, 2008 8:42 pm) thegraduate (Aug 27, 2008 9:19 pm) mimabro (Aug 28, 2008 6:46 am)
#418 of 475 Re: Teach me the tricks! [thegraduate] by mimabro Aug 27, 2008 (8:42 pm)
Replying to: thegraduate (Aug 27, 2008 6:27 am) I live in CT and we most certainly have our unbearably hot days. My issue is that I really can't take the A/C in any kind of car without getting severe headaches... the only real way I can somewhat deal with it is if I have my windows wide open, which is even worse mileage wise. I use my A/C but very very seldom, even when I do use it I keep it between 74 and 80 (windows open!)... which is still cooler than the temperature outside when I decide it's necessary. Replies to this message: thegraduate (Aug 27, 2008 9:19 pm) mimabro (Aug 28, 2008 6:46 am)
#419 of 475 Re: Teach me the tricks! [mimabro] by thegraduate Aug 27, 2008 (9:19 pm)
Replying to: mimabro (Aug 27, 2008 8:42 pm) I'm very curious, and although it is none of my business, may I ask what the A/C does that causes headaches? Please, tell me "none of your business" if I crossed the line! Is it the airflow? It can always be directed to the floor. Replies to this message: mimabro (Aug 28, 2008 6:46 am)
#420 of 475 Re: Teach me the tricks! [thegraduate] by mimabro Aug 28, 2008 (6:46 am)
Replying to: thegraduate (Aug 27, 2008 9:19 pm) I'm not sure why it happens, but I always have it directed to the floor when I use it.

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