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Honda Accord Hybrid: Driving Tips & Tricks
Looking for advice on how to maximize your mileage performance? This is the place to share and discuss your favorite mileage enhancing driving tips.
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It is a battery saving design I suspect.Putting it in park assumes you may sit idling for some time thus wasting battery charge.
I agree, if you're in PARK, there isn't much point in restarting the engine.
Are you sure it's the act of shifting into PARK that causes the engine to restart? Could it be that you also take your foot off the brake at about the same time so it's actually the releasing of the brakes (before the ignition is turned off) thats causing the restart - just as it would if you stay in DRIVE.
Now I have a question. I have a HAH with Navi on order which had a production date of Dec. 9th. My dealer tells me he has no idea when this car might show up. Can any of you tell me what the production date on your cars, or give me a idea of when I should get mine.
Obviously! That is exactly how the computer “knows” that your intention is not continuing idle stop but to park your car. And so, a manual override must take over, with driver “turning off” the car.
Try to imagine how an automatic shutdown feature would work. Perhaps it could, but would you want it to have a timer (if you have stopped for longer than 2-5 minutes, the car automatically shuts down)? That may or may not be the best idea for multiple reasons, one being you parking your car while it is really “on”. You still have to get your keys out though.
But speaking of keys, if the idle stop logic is integrated with the ignition key, then it could work, but I’m not sure about everything a typical “shutdown process” would involve.
>>> computer “knows” that your intention is not
>>> continuing idle stop but to park your car.
>>> And so, a manual override must take over,
>>> with driver “turning off” the car.
Could you clarify how this explains the need for the computer to restart the engine when the driver goes from one state where the engine is not needed (idle stop, in drive w/ footbrake on) to another state where the engine is not needed (in Park with footbrake on).
I agree an auto-shutdown procedure would be problematic, but that's not the original post was refering to.
When the driver shifts the lever to ‘P’, the polling must stop. The question now is, should it stop automatically? And if it can’t, then there may be an underlying reasoning (a proper shutdown process, perhaps). I can see it as the shut down process you apply to a typical PC (by selecting ‘Shut Down’ from the menu instead of simply pushing the ‘Off’ button).
Obviously, it doesn’t shut down automatically. To stop the polling, the driver must turn the ignition off and remove the keys. This could (potentially) be tied to some kind of ancillary system (like vapor recovery) as well. I’m sure the engineers had reason(s) to have it work the way it does.
PS. These are my guesses, not necessarily the genuine reasons for the behavior.
the auto stop feature does take a little getting used to, it is somewhat bothersome when i do not come to a complete stop as the car will shudder a little when the engine restarts. it is like it is unsure whether to stop or to continue running. i did however take out the extended warranty so i am not going to stress over the constant use of the parts.
initially I was concerned with my mpg but now i am fully satisfied with the car. we had considered a nissan maxima but everything except for the outside appearance and the stereo system has so far surpassed the maxima we looked at.
However, the engine completely and quietly shuts off when I come to a full stop.
Bonus point about the Maxima: Somebody said the Maxima looks like a handsome guy who wears flashy suit outside but inside he wears a "cheap panty".
I believe my HAH's MPG in the next gas tanks will be improved especially on highway runs because on constant speed of 65 MPH on highway my digital meter registered 36.5 MPG. The engine is very robust, very smooth, and very quick like a very hyperactive mountain lion. A slight touch on gas pedal will immediately move the car forward rapidly.
just a quick post: Has anyone else (HAH owners) caught themselves trying to keep the eco light green (driving efficiently)? I find myself doing it all the time. On my first tank of gas still, but will post mileage soon.
Cheers-
fxtool
My ECO light green is on most of the time. I have been enjoying more and more my HAH as I have learned the efficient driving techniques. The car is real fast but "Eco". Honda surely will meet one of its goals by providing customers a very powerful car yet easy on gas. I have been waiting for this kind of car for so long until now. The audio and navi. systems are so useful and impressive. One thing I notice is the battery is a little bit low while the weather is cold.
Actual mileage posted for the HAH on this thread and greenhybrid.com varies from 19 mpg to 33 mpg. only one poster has averaged over 26.5 mpg calculated at fill up. That person has a 36 mile per day commute. For that long of a commute 33 mpg does not set my world on fire. I'm looking for cars with serious mileage gain. HAH is not getting the mileage of even the Escape hybrid. How is comparing the Accord 4 to the hybrid such a stretch. The EX 4 cylinder has more than enough power for any US highway need. Plus you get the moonroof and a full size trunk. I find this HP race very anti-environmental and dangerous. Most people on the highways have more HP than they can handle.
You posted getting 29.7 mpg with the HAH. If I had spent $10k over the exact same car with the only difference is faster 0-60 and worse emissions rating, I'd be mighty upset. In San Diego the difference is even greater as the HAH I sat in was $34k plus without NAV.
Honda has a couple cars I have on my list. The Odyssey EX-L W/NAV. If I was forced into commuting I would consider the HCH or Insight. I can tell you from experience the HAH is not that plush to sell for $34k-$36k. The 4 cylinder EX W/NAV is not a bad little car for the money. And it is available as PZEV if you are environmentally concerned.
PS
Edmund's review says the brakes are still sub-par & the handling tepid. I would add especially for a car that is 0-60 in 6.5 seconds.
The mileage does appear better if you can keep the eco light on, this is not so easy! I've tried to use rcruise control, but that is not much fun.
My other complaint is that the trunk is quite small, especially its side-to-side width. There is no way to fit anything awkward in there.
Good things - it's incredibly quite, handles well enough, has all the power I need, and big enough for five. I'm just concerened about my low mileage.
Thank you for adding to the list of those concerned about mileage, that has not matched the hype. If you got 32 MPG with your old car I would imagine you drove it the same as your new one. Many on here will find fault with your driving. I think it is the design that is at fault. It is like putting someone in a Porsche and telling them not to go over 55 mph. It is not going to happen. There are cars in the HAH class that get better mileage and from all the posts out handle and are more fun to drive. Plus they are not limited to being driven slow for good mileage & some even cost less to buy.
PS
Welcome the the Edmund's Forum!!
How long do you idle your car after a cold start?
How long do you drive after a cold start?
How long do you normally drive anyway?
What is the kind of traffic do you encounter?
And after all is said and done, sometimes it can take 3-5K miles on the odometer for fuel economy to settle down. Don’t worry about it during break-in, and for the first few thousand miles. Even with my 1998 Accord (a non-hybrid, of course), I noticed couple of things after about 7-8K miles:
Mileage improved a little
The power train was much-much smoother and decisive
Answer my questions (above) and let us see if I can try to help you do better than you have so far and before you hit about 5K miles.
BTW, don't expect Accord Hybrid to beat Corolla or Civic mileage. Only match it. Also, you were getting 32 mpg with manual transmission. An automatic would have given you a few mpgs less and thats what you've got with HAH.
How long do you idle your car after a cold start?
I live in Chicago, so a cold start is pretty cold. I don't let the car warm up first, I just get in and drive. I figure plenty of gasoline is wasted letting the car set there warming up (although I don't know how much)
How long do you drive after a cold start? I have about a 25 minute (+/- 5) commute, around 12 miles on relatively fast city streets (35 -50 mph). I know the timing sequences of most of the lights, so I don't usually race from one to the next.
How long do you normally drive anyway? On some days this is my only drive. Sometimes I might go elsewhere requiring 10 -25 highway miles (average speed in Chicago is 75, and it's hard to go that slow in this car!), plus another 5-10 miles fast city driving. Not very many short 1-2 mile drives (I'd rather walk)
I know that this is the break-in period, that the weather is cold, etc, etc, but I got this car as a replacement for the 98 Corolla, and had some expectation that I would be running around that mileage with enough room to fit my family (and heck, 255 HP, luxury interior, yadda yadda is nothing to be ashamed of). I am just surprised at how far below the mileage estimate has been compared to actual use - - we're talking 25-30% off!
Your claim that you don’t resort to excessive idling suggests that it can’t be used an excuse because idling does get you 0 mpg, hybrids or non-hybrids alike. And cars warm up better when moving. My cold start idling is typically 15-20 seconds with light footed driving for an eighth of a mile.
With a warmed up car (hybrid or non-hybrid), your regular driving doesn’t seem to be harsh on fuel economy either. So, that sounds good as well.
Now, hard to resist going fast is going to play a role in fuel economy, however. I typically get about 32 mpg in my Accord when I average about 70 mph on highway, but 75-80 mpg returns me about 30 mpg (a drop of 6-7%).
After all is said and done, I too would expect you to get 28-30 mpg (in mostly city driving), or an additional mpg or two if some highway is involved. By comparison, I get 23-24 mpg in my four cylinder Accord with mostly city driving (and on highway, like you said, it is hard to resist the average speed and I live in Dallas area!).
After break-in, you should end up getting mileage similar to your manual transmission Corolla. BTW, I have averaged 28-29 mpg in (rental) Corollas, but of course, they come with automatic transmission, and have managed around 34 mpg or so on couple of pure highway trips. And Corolla is a car I rarely feel like pushing beyond 70 mph (unlike the 1988 Corolla GT-S coupe that I owned... it was a pleasure to drive).
I'm still waiting for my mileage boost at 1000, and I'm trying to channel Viet's driving style, which has proved to be difficult.
On the trip I averaged 29.5 mpg, but that was in D3 for an hour up the mountain, with the climate control on auto the whole time.
2 interesting things I noticed:
Electric steering- While in bumper to bumper traffic coming down the hill in auto stop on a turn, the wheel wanted to stay in the turn until I got the engine going for 5-10 seconds ( I was coasting at less than 5 mph for a while in post ski traffic).
Drone effect- My dog was hanging his head out the window in the back seat, and the other 3 windows were up. When the 3 cylinders shut down ( we know they don't really stop, see above posts) it sounded vaguely like a helicopter in the cabin.
More observations to come. Still trying to stay in the eco zone, but have a bit of a leadfoot.
But is the HAH's coast-ability about the same as other automatic cars of similar size? I notice that the downshifting and engine braking really take away a lot of momentum. I also wonder if the charging function (green lights) also contributes to the momentum drain.
Comments?
How short is your commute?
How much do you use the defroster (which in many cases uses the A/C)?
How much is stop and go red lights versus getting on a freeway and cruising?
How many miles on your car?
What is your tire inflation?
Do you garage the car or does it sit outside?
Have the roads been generally dry or wet/icy?
How many passengers?
There are dozens of variables in getting high MPG - it's a GAME.
You are quite right Larsb. Let me add some more. Abrupt acceleration and abrupt braking badly impact the MPG. Also, cold weather impacts the battery and the performance. My battery now gets charged over 85% as the weather is getting warmer. Do not use defroster too long. Do not open windows while driving. Do not turn on AC too long. Check and inflate tires to required pressure. Do not carry too heavy loads (many women's favorite hobby is buying many heavy things, keeping them in the trunk and carrying around for easy exchanges/ returns...). That's my wife's hobby.
Many things may badly impact the MPG. Drive comfortably and take it easy, Lori2. Enjoy your HAH. I constantly get 30 MPG in cities since the first day.
In order to truly appreciate the real power of the HAH I will have to visit my friends in remote cities soon to test its MPG on highway.
It's amazing how good you can get at coasting! I've experienced the same thing and the way my garage is I have a very small margin of error. I'm "hitting the mark" about 90% of the time now.
Turning Off:
I also have gotten into the habit of turning off the ignition while still in drive. I then shidt to park. I've wondered if there are any SERIOUS ramifications to this but so far it seems to be ok. It may leave the tranny in a state that is not ideal for restart but I've only noticed the occasional hesitation into drive after starting the car.
Thoughts on that?
When you turn off the engine without shifting the tranny back to park position one or some pulleys is/ are still pulling. Watch out or you may damage the pulley(s) as my friend did it with his Maxima since he turned off the ignition key while the engine was running. I am not quite 100% sure on that. You may want to check with Honda engineers to be sure if you should turn off the ignition key that way.
As far as I know, you can do no harm to a torque-converter automatic by shutting down the engine with it still in drive, AS LONG AS THE CAR IS NOT MOVING.
Anyone else seen similar problems?
Could this be my "driving style?"
please let me know,
-t
-tim
Here's what the manual says:
The autostop will function if all of the following conditions are met:
1) The vehicle speed is over 8 MPH before the vehicle comes to a stop.
2) The coolant is nearly up to operating temp.
3) The shift lever is in D, D3 or N.
4) You ARE pressing on the brake.
5) You are NOT pressing on the accelerator.
6) The IMA battery has sufficient charge.
7) Climate control is set to lower fans speeds either in manual or auto.
8) Outside temp is between 10 - 100 degress F.
9) The front window defrost is off.
My experience is that it works most of the time as expected. Occasionally it fails to stop after creeping forward a few times in a drive-through but never in traffic probably due to much lower "creep" speeds in a drive-through.
it was the front defroster that was "getting" me this time.
what's funny is I knew about the other 8 conditions.
thanks for checking for me.
-tim
I've got about 1300miles and have yet to have a tank get better than 22mpg (via the odometer reading).
what am i doing wrong?
in city driving,
-tim
Let us know how it goes!
Cheers!
Is it possible that for other than one person claiming excellent mileage, that the Hybrid systems are just not working and the mileage is the result of running a normal V6?
Handa seems to have some explaining to do to the vast majority of Hybrid Accord Owners!!!
There are many reasons for cars not achieving max MPG in the colder months...
Car engines must warm up to a certain operating temp before they most efficiently use the fuel. Winter months and colder temps make that transition from cold start to most efficient take a little longer.
In addition: Colder tires are harder, so they provide more rolling resistance than when they are warm and soft.
Also: new cars (and all the Accord Hybrids are "new" as of three months ago) have what is called a "break-in period" where the metal engine parts are still grinding against each other more rigidly, creating more friction, which also reduces efficiency. OVer time, the "extra metal" shaves off and gets lubricated better (expecially if you use Synthetic Oil) and the friction is reduced, which affect MPG numbers.
Also: Honda Hybrids use the "electric assist" much less before warmed up, and since the electric assist is key in MPG gains, the car must warm up before the use of the assist starts becoming most effective.
Also: Winter formula fuels used in most states hold less energy and this also hurts MPG.
Also: Generally speaking, colder weather in many areas means "rain, snow, or slush or ice" on the roads - these things add additional resistance which the tires must push out of the way to contact the road, so they hurt MPG in that way.
Also: Tire pressures also are lowered by the cold. Most people fail to properly inflate their tires all year, but ESPECIALLY in the winter when it is cold and you might have dirty tires and you just dont want to deal with spending time in the cold airing up a dirty tire. Low tire inflation can cause blowouts and adds quite a bit of rolling resistance.
Also: Additional idling uses fuel, and many people in cold climes are used to warming their car up in the morning. That is good practice to stay warm, but BAD for MPG numbers. While idling, your car is getting 0 miles to the gallon !!
Also: People who use the defroster in a Hybrid are many times using the A/C compressor to help reduce the humidity in the car and clear the fog. That is a MPG killer too.
See this science page for more explanation:
http://tinyurl.com/3s7lo
The average of 27 mpg combined is 16% below the EPA 32 mpg combined. There are so many excuses for why the HAH gets such poor mileage. Why not admit it is a failure as a hybrid. Plus the sales bear that out. You will be seeing them below invoice in many parts of the country, if they are not already there. Honda will be lucky to sell half of their projected 20k units.
The truth is the poster getting 22 mpg is probably closer to the overall average than those on greenhybrid. Most on that website tend to be hypermilers and work hard to get the good mileage. I don't know many people that drive to get good mileage. They drive to get from point A to point B. They expect to get what the window sticker says they will get.
Imagine there is a big basket of raw eggs underneath your fuel accelarator and try your best not to brake any single egg. That's called the "HAH's Delicious Raw Egg Tactics" which can save your fuel tremendously. Yet, it prevents you from demonstrating your HAH's 255 HP and 232 lbs-ft low-end torque.
Mike