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Honda Civic Hybrid MPG-Real World Numbers

421 messages,  Last post on Oct 03, 2008 at 12:14 PM

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

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#408 of 421 Re: Low Miles Per Gallon [steveaa123] by thegraduate Jul 18, 2008 (9:34 am)
Replying to: steveaa123 (Jul 18, 2008 9:25 am) Honda Civic 2006-2007 Issues Thread - Click Here   There has been a known problem where the rear control-arms of the suspension are causing premature tire wear on Civics. My dad's EX sedan (2007) required new tires at 30k miles, and needs them again at 54k miles after having the work done from a TSB a few weeks ago. He's currently trying to get Honda to pay a prorated amount on the cost of the two sets of tires that the car has ruined prematurely. You can read more about it at the link provided above.
#409 of 421 Re: Low Miles Per Gallon [steveaa123] by aue Jul 18, 2008 (9:53 am)
Replying to: steveaa123 (Jul 18, 2008 9:25 am) Not only is there a TSB on the rear control arm replacement; there are recalls on a possible short circuit in the battery system behind the back seat and a possible failure of the brake light switch due to over lubrication of the telescopic steering column. You should have been notified by Honda about the 2 recalls but nobody will notify you about the TSB. I found the TSB online and had to confront the dealer with it before they would do anything. The tires were at 44K and Honda wouldn't replace them, although they did replace the control arms. It is totally annoying that Honda purports to have the greenest vehicles in the universe and then treats its customers worse than any Detroit car companies would. Replies to this message: thegraduate (Jul 18, 2008 9:59 am)
#410 of 421 Re: Low Miles Per Gallon [aue] by thegraduate Jul 18, 2008 (9:59 am)
Replying to: aue (Jul 18, 2008 9:53 am) A TSB isn't made to be distributed to the public. Instead, it is given to service techs and advisors to help them know exactly how to diagnose and fix a commonly found problem.
#411 of 421 Re: Low Miles Per Gallon [steveaa123] by donga Jul 18, 2008 (11:09 am)
Replying to: steveaa123 (Jul 18, 2008 9:25 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 421 Best car; worst service by aue Jul 21, 2008 (8:20 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 421 Tires and mileage by steversk Aug 11, 2008 (4:42 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 421 Current mileage by steversk Aug 11, 2008 (4:49 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 421 mileage history by Frungy Aug 22, 2008 (10:09 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 421 Teach me the tricks! by mimabro Aug 26, 2008 (8:07 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 7:27 am) mimabro (Aug 27, 2008 9:42 pm) thegraduate (Aug 27, 2008 10:19 pm) and 1 more...
#417 of 421 Re: Teach me the tricks! [mimabro] by thegraduate Aug 27, 2008 (7:27 am)
Replying to: mimabro (Aug 26, 2008 8:07 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 9:42 pm) thegraduate (Aug 27, 2008 10:19 pm) mimabro (Aug 28, 2008 7:46 am)

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