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Honda Accord Hybrid: Driving Tips & Tricks

PFFlyer@EdmundsPFFlyer@Edmunds Pennsylvania Furnace, PAPosts: 5,807
edited April 15 in Honda
Looking for advice on how to maximize your mileage performance? This is the place to share and discuss your favorite mileage enhancing driving tips.


Moderator - Hatchbacks & Hybrid Vehicles



  • My Accord Hybrid shuts off the engine (they call this Auto-Stop) when the batteries are charged enough and my foot is on the brake and the car is going 8 mph or less. So if I pull into a parking place, for example, the engine Auto-Stops by the time I have stopped moving. And then when I shift into Park, it starts the engine again, just so i can shut it off. This seems odd to me. There must be some reason why they designed it this way, but I don't know it. What could be the purpose of starting the engine again when it shifts into Park, if Auto-Stop has already turned off the engine because I stopped moving?
  • gagricegagrice San DiegoPosts: 28,680
    When you ask what they found to be the original trouble ask them about this issue. Seems every time the engine starts it will use a bit more gas. Maybe that is why the poor mileage reports that are coming in on the HAH. They may need to fine tune the operating system for the computer.
  • I'm no mechanic or tech but a good guess would be:


    It is a battery saving design I suspect.Putting it in park assumes you may sit idling for some time thus wasting battery charge.
  • Weird....


    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.
  • robertsmxrobertsmx Posts: 5,525
    As I see it, idle-stop does not "turn off" the car. The system is still active and monitoring for driver's actions. Without an intelligent system that "knows" whats in the mind of the driver when he/she stops the car, there has to be an override to be able to "turn off" the whole system, hence the need to "restart".
  • My foot never leaves the brake pedal when I'm shifting into Park. So the cause of the engine restarting when I shift into Park is not the brake pedal.
  • Ok I am not 100% sure that this answer is right but. The hybrid electric motor might not have the gearing to run in reverse there for every time your gear shift passes the reverse gear(which you must do to shift from park from drive) the motor automatically starts because the the gas motor must do all of the work.

     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.
  • Mine was supposed to show in January (After the initial one month delay that pushed all cars back a month) then got bumped to February. I only have one now because the first person in line who had December's car dropped out and I got it. Don't know if that helps. My dealer never promised a specific date, only a specific month.
  • robertsmxrobertsmx Posts: 5,525
    My foot never leaves the brake pedal when I'm shifting into Park. So the cause of the engine restarting when I shift into Park is not the brake pedal.


    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.
  • >>> 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.


    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.
  • robertsmxrobertsmx Posts: 5,525
    During idle stop, the car is still “on” (the ICE is off, but the computers would have to be polling the system for any activity that would require a quick restart. This happens when brakes are on.


    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.
  • rlkrlk Posts: 14
    on my first tank it was about 26.5....i just finished the second tank and calculated the mpg out to be 30.37...the instant read 30.2 so it is quite accurate. we have over 700 miles on the car now so I am assuming this tank will be even higher considering we have passed the break in period. this is also mostly city driving, some highway but there are a lot of hills around here so that may throw it off also.


    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.
  • vietviet Posts: 847
    I have same concern about the HAH's Auto Stop. I noticed the Auto Stop flashes when the speed is less than 10 miles/hour. But interestingly, sometimes, Auto Stop does not flash when my speed is less than 10 miles. I have to get to the habit that when I stop I have to hold the brake firmly. Any tiny release of the brake will revive the engine immediately. I dont know how Honda engineers explain this, especially on the possible fact that the engine parts' life expectancy may be shorter that way.


    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".
  • vietviet Posts: 847
    I have been feeling comfortable with my HAH when it changes mode to shut off its engines completely or when the engine is reactivated. I don't feel anything when the mode is changing any more. Also, I got used to the trick of keeping the brake firmly at stop signs and avoid frequent release of gas pedal unless I really need to move the car forward or to continue with the traffic flow. This better driving technique should be a bit different from that in conventional gas autos.


    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.
  • fxtoolfxtool Posts: 20
    High all-

    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.



  • vietviet Posts: 847
    Hi 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.
  • gagricegagrice San DiegoPosts: 28,680
    gagrice, where did you get your numbers? Everyone on this forum is reporting high 20's and low 30's with vehicles that are not broken in yet. Are you making them up?


    Actual mileage posted for the HAH on this thread and 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.



    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.
  • I have had mine since December. I replaced a 1998 Toyota Corolla (manual) that got about 32 mpg. I have been sorely dissapointed with the mileage so far (on my 3rd tank of gas). I think the best I have seen so far is 30 mpg on the highway (admittedly, cruising at about 75 mph). City driving has run between 23-25. If it is still this low after the 1000 mile mark, I think I may take it to the dealer to see if there is something off with my car, especially after reading this forum.

    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.
  • falcononefalconone Posts: 1,726
    Don't expect to get better mileage than that. I've driven a Prius on an extended test drive and did manage a bit over 40mpg but I was going 75. I think 30mpg at 75 is very good for that car. What were expecting?
  • gagricegagrice San DiegoPosts: 28,680
    I think the best I have seen so far is 30 mpg on the highway (admittedly, cruising at about 75 mph). City driving has run between 23-25.


    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.



    Welcome the the Edmund's Forum!!
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