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Hybrid Vehicles Honda Accord Hybrid Honda Accord Hybrid MPG-Real World Numbers
138 messages, Last post on Jul 27, 2008 at 10:19 AM
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Replying to: ryan1550 (Nov 09, 2005 8:13 pm) |
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I have about 2K on my HAH and the mileage is getting worse. Part of that is due to the short trips that make up most of my driving and part is due to the drop in temperature as we get into winter here in New England. But I have observed that the car does not use dynamic braking when it should. This as especially true when the car is first warming up, but even after the ECO light comes on, it is not charging when coasting or braking much of the time. This is true even when the charge indicator shows only 3 or 4 bars. Is this normal behavior? Right now I am getting about 24MPG on a tankful. |
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I have had my 2005 Honda Accord Hybrid for 3 months and have put 4,200 miles on it. When I purchased the car, it had slightly less than 500 miles on it. I tracked the mpg at every fill-up. I was initially getting right at about 31 mpg (90% highway 10% city). During the first two months the actual mpg declined to 25 to 27 mpg with no change in driving habits. The only real change in conditions has been the temperature. Also from a weight perspective, I do not tend to have other passengers at all. The other thing I noticed was that the car's mpg indicator tends to be overstated and prior to the colder weather setting in, it would read higher immediately after filling the gas tank (33 to 36 mpg range). In the last month,the best reading I can get is between 27 and 28. I drive on the highway most of the time at 60 to 65 mph with the green "Econ" light illuminated. My actual mpg was 26.6 for both of the last fill-ups. I am getting ready to go to the dealer for an oil change and was wondering if something needs to be checked. I am very disappointed with my mpg results so far. I have a 1992 240 GL "Tank" that gets 23 mpg. The mpg I am getting does not justify the premium price I paid.
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Replying to: stlmo57 (Dec 22, 2005 10:06 am) Might I be doing something wrong? I've noticed that the blue 'assist' bar seldom comes on; should I be actively trying to get that to engage? If so, I don't know how to do that. Any tips? Thanks.
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Replying to: cba82 (Dec 22, 2005 1:55 pm) Hi, I am stlmo57. When I 1st started driving my 05 HAH in mid-September, it was almost fun to see how high I could get the displayed mpg to read. Although I could sometimes get it to read as high as 36 mpg, the actual measured amount was much less and never more than 30(when I fill-up my car I literally fill it until the pump will no longer dispense and do the math myself). Some things I noticed early on were: 1) I got a much higher reading on the dash displayed mpg immediately after filling up the tank. 2) The only time I had 3 passengers in the car, the dash displayed mpg dropped sharply 4 to 5 mpg. 3) In St. Louis, Mo, when the weather turned cold, I never saw 30 mpg displayed on the dash for over 30 days, even after a fill-up. 4)Today, Thursday December 22, in St Louis, Mo the temperature topped 57 degrees and magically, I was getting a dash reading of 31 mpg. Have you noticed any of these items? |
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Replying to: stlmo57 (Dec 22, 2005 2:19 pm) I've not manually computed my mpg, relying instead on the dash display; next time I fill up I will do the math myself as a check on the car's computation. Also, I live in New Hampshire, and we've had a very cold December, so I've not been able to compare results in cold weather vs. warm; at this point, it likely won't be until April that I'll be able to get a sense of the results in warmer weather. The only passengers I've carried in the car are my young children, so I've not detected any difference with passengers and without. Reading the posts on this forum has given me some ideas of how to improve mileage -- including letting the car engine do the braking, increasing speed only gradually, and lowering my overall speed on the highway -- that I am going to try out and see if that helps at all. When I see some of the numbers people are quoting on this board, and other people remarking that "you must be an experienced hybrid driver," that suggests to me that there are specific techniques you can teach yourself to improve mileage. |
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Replying to: stlmo57 (Dec 22, 2005 2:19 pm) I live in Kansas City and got my HAH in late May. I've made numerous long trips. During the warm weather, I would average about 36 mpg driving to Davenport, IA at over 70 mph. However, when I made the same trip in 14-degree weather at the beginning of December, the mileage was down around 29-30 mpg. Since the weather has warmed up during the last week, the mileage has again improved. I can only speculate that the density of the cold air affects the gas mileage, but I would never have guessed the effect would be that large. Perhaps there is an engineer or other science-brained person following the thread who can tell us if the air density of the cold air can acutally make that much difference.
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Replying to: stlmo57 (Dec 22, 2005 2:19 pm) Regarding the self-measured gas mileage vs the computer, I am also very interested in this. I've read material from the "auto advice" types which says that you can't get an accurate calculation of gas mileage by doing the calculation on 1 tank of gas...the calculation can be off because the car is at a slightly different angle than the last time you filled up (so you actually put in a different amount of gas), or various other variables. They suggest you calculate an average mpg over several tanks of gas. For instance, keep a record of how many miles you drive over several fill ups and compute the mileage from that. I did it it this summer (over 5 fill ups) and came up with an average of 33.6 mpg vs 35.0 that the computer told me. I think that is a big variance. I am going to do the test again, but would be interested to know what you, or others who read this, experience.
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Replying to: ryan1550 (Dec 28, 2005 8:58 pm) |
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Replying to: ryan1550 (Dec 28, 2005 8:58 pm) I am a creature of habit. With the exception of being out- of-town, I have filled-up my car at the same Quick Trip near my home for over 10 years. So this variable is fairly constant. After I purchased my 05 HAH, I set-up an Excel spread sheet that I tracked my mpg on. The spread sheet was also cumulative (divided total miles by total gallons out to two decimal places). The problem with doing it over multiple fill-ups, as in my case, was over the first five fill-ups I averaged 28.5 mpg. In reality, my mpg has walked down, ie., 31 mpg, 30 mpg, 29 mpg, 28 mpg, 27 mpg and 26 mpg. Thus an average of 28.5. These are not the actual numbers, I am just simplifying my example. But, I did experience this type of trend. Cold weather definitely does comes into play (2-4 mpg). I am taking my car in for an oil change tomorrow and I will ask the dealer to tell me what they think. Given that this is a Hybrid, and it commanded a $3,000 premium, anything under 30 mpg, is a disappointment. As I stated in my initial post, I do approximately 90% highway and 10% city. On the highway I maintain a speed of approximately 62 mph with the "Eco" light illuminated.
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