The 47 mpg Rated Honda Accord Hybrid Challenges

Discussion in 'Honda' started by xcel, Sep 18, 2013.

  1. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Harold:

    Thanks. I felt so bad for them. :ccry:

    Carcus, it would be very close between Accord HEV and a Prius Gen III but not even close to a Prius Gen II. Pretty amazing given the extra 500 pounds, larger interior space (small cargo however) and being far more comfortable than a Gen III Prius. The Accord pro more than what Ford promised from its Fusion Hybrid and Energi promised but failed to deliver by a long shot.

    Still testing the Accord HEVs 12.3 cu. ft. of cargo cap this morning/afternoon… It holds more than you would think although 15 to 16 cu. ft. would be better.

    2014 Honda Accord HEV Review

    [​IMG]
    Next load out. Cabinet faces and drawers.​

    Wayne
     
  2. Luke

    Luke Well-Known Member

    Hi Wayne,

    It's great you could help someone out, very nice of you:).

    I wish Honda would incorporate in their future designs foldable rear seats for hybrids since long items will never fit even if cargo space is larger.

    I noticed you had it in 'B' in that last picture. I assume for the regenerating you don't use any brakes and leave it in D. But 'B' if it's steeper going downhill requiring braking or you have to use extra braking for sudden stops.

    Agree I wish Honda should show more info in PHEV on those last 2 bars in HV mode (and how about digital kwH/mile readout?). But with some EV charge I get digital EV range so that's helpful until it's drained.
    For me the SoC is very predictable and I never seen it change from 2 bars while EV is empty. Maybe it has a hard time keeping up with you:). But I did notice a delay of few seconds at times and EV range is only showing when you get at least 1-2 extra miles back. Honda shouldn't have made a difference I think between EV and HV miles. It's just 1 large battery anyway I assume.

    PS I know Navigation isn't greatest but I'd recommend putting it in 3D mode with direction list. Nice feature is that it will show 4 bars for each segment indicating amount of traffic (which isn't useful if traffic is incorrect but for me it's generally correct with some lag).
     
  3. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Luke:

    Never use B. It was a quick snap down from a glide and ended in B vs. D. You will not gain any more than applying brakes in D but it will reduce Glide distances at every opportunity. Not good. Will check out the NAVI in 3D tomorrow.

    The high speed run…

    2014 Honda Accord HEV Review - Phoenix to San Diego

    [​IMG]
    The Google MyTracks Route

    [​IMG]
    The speed and elevation topography map.

    [​IMG]
    37.5 mpg over 345.5 miles equates to 38.1 mpg over 348.3 miles actual.

    [​IMG]

    Temps ranged from 68 to 55 in the mountains. No to essentially no wind across the entire drive.

    Phoenix To San Diego – The Stats

    Activity type: driving
    Total distance: 351.6 miles
    Total time: 4:59:10
    Moving time: 4:57:29
    Average speed: 70.5 mph
    Average moving speed: 70.9 mph
    Max elevation: 4099 ft
    Min elevation: -170 ft
    Elevation gain: 9103 ft
    Max grade: 9 %
    Min grade: -7 %

    Google MyTracks was provided courtesy of the Motorola DROID RAZR MAXX HD.

    Wayne
     
  4. EdwinTheMagnificent

    EdwinTheMagnificent Legend In His Mind

    Wow. Speed kills........... MPG. Especially in hybrids.
     
  5. Carcus

    Carcus Well-Known Member

    Wayne,

    In the flat at 70 mph what are the rpms? Are they steady?
     
  6. Harold

    Harold Well-Known Member

    That is very good for the size and weight of the auto! I just drove from Victoria, BC down to Dessert Hot Springs with my HCH2 2 and arrived showing 47 mpg. Speeds at 65 -70 MPH. I am very happy with that. H
     
  7. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Edwin:

    If their was one Achilles heel to the 2014 Honda Accord Hybrid story, this is it.

    While the Accord Hybrid can hold its own and even top the third generation Prius under some realms, at higher speeds, it falls apart pretty quickly as shown by the comparison below.

    2014 Honda Accord Hybrid high speed test

    [​IMG]
    37.5 mpg over 345.5 miles equates to 38.1 mpg over 348.3 miles actual.

    [​IMG]

    2013 Toyota Prius PHEV-11 under Charge Sustaining mode

    [​IMG]
    52 mpg or about 49 mpgUS actual at 69, 68, and 67 mph avg. speeds.​

    Carcus, they are steady if load is steady at a touch over 2,500 RPM. Any jump in load over 3 bars and it spins up quickly. During the high speed climb up the Laguna mountains into San Diego, it was not uncommon to see 4,600 to 5,000 RPM and the 2.0L ICE working really really hard.

    Harold, I thought this is one area where the 2014 Accord Hybrid fell apart. Not that this is a comparison but I bet the 38 mpg highway rated 2014 Audi A6 and A7 TDIs would beat the 45 mpg rated Accord HEV at these higher speeds. I know the 49 mpg rated Prius-III would crush it.

    Wayne
     
    Last edited: Dec 2, 2013
  8. priusCpilot

    priusCpilot George

    Since the Prius was a Plug-In that did about 49mpg? Would it not do even better with the HEV since it drags less weight around?
     
    Last edited: Dec 2, 2013
  9. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi George:

    The 13 Prius PHEV-11 is actually slightly more efficient on the highway than the regular 13 Prius and in my drives, it is. The 14 Accord PHEV-11 is also slightly more efficient than the 14 Accord HEV per the EPA but after driving the two, the HEV is proving itself to be slightly more efficient in almost all realms.

    Wayne
     
  10. RedylC94

    RedylC94 Well-Known Member

    Yup, very predictable. That high-power scenario is the circumstance when it would benefit greatly from another, lower, mechanical ("engine") drive mode ratio, instead of relying on the less efficient series mode. The one ratio had to be a difficult compromise between trying to avoid that situation and avoiding unnecessary revs at light loads.
     
  11. EdwinTheMagnificent

    EdwinTheMagnificent Legend In His Mind

    RedylC94 , you are absolutely correct. Honda dropped the ball or cheaped out a bit on this one. Maybe corporate ego would not permit them to copy Toyota's HSD , at least the parts of it that the patents are expired.
     
  12. Carcus

    Carcus Well-Known Member

    That's more or less what gm did with the volt. How does the Volt's high speed CS mpg stack up?
     
  13. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Carcus:

    Given the Volt's non-turbo'ed 1.4L, I bet it would have its @$$ handed to it on a similar higher speed drive. It was not all that great in CS mode up to 70 mph and over that would probably prove devastating. Probably is not 100% proof however.

    Wayne
     
  14. Carcus

    Carcus Well-Known Member

    I'd like to see some non hybrid accord high speed ss numbers before I'm convinced immd drivetrain has a high speed Achilles.

    / I assume the accord is noticeably more stable at 70 mph on the highway than a Prius?

    // I drove a gen ii prius at 70 mph on a gusty wind day once -- it was horrid.
     
  15. RedylC94

    RedylC94 Well-Known Member

    I suspect the hybrid would probably clobber the non-hybrid Accord at most if not all speeds in that comparison. The hybrid's weakness appears to be not so much high speeds as heavy loads---any situation that requires a shorter gear ratio than the fixed "engine drive" mode ratio. They might cover that gap with battery power for short distances and low speeds.
     
    Last edited: Dec 3, 2013
  16. Luke

    Luke Well-Known Member

    Hi Wayne, I thought the Accord Hybrid setup doesn't use a true CVT but a fixed gear ratio and with the electric motor it can vary gear ratio? How can you determine RPM since I don't have a readout on my PHEV?

    Maybe this setup is reason that at higher speeds gear ratio is not as ideal. But haven't looked into how this setup exactly works.
     
  17. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Luke:

    To see RPMs, I had an SG-II hooked up to both the HEV and PHEV. The e-CVT is variable all the way up. The mountains showed it very clearly.

    IHTHs?

    Wayne
     
  18. Carcus

    Carcus Well-Known Member

    Au contraire....

    The hybrid drive mode (vs engine drive mode) provides better fuel economy under a higher driving load ----- according to Honda ----4.4.2. Switching between Hybrid drive and Engine drive.

    / Development of SPORT HYBRID i-MMD Control System for 2014 Model Year Accord
     
  19. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi All:

    2014 Honda Accord Hybrid Review

    [​IMG]
    8.43 seconds to 60 mph

    2014 Honda Accord Hybrid at the Proud Bird Restaurant near LAX

    [​IMG]
    Tuskegee Airman Redtail P-51

    [​IMG]
    American Volunteer Group Spitfire

    [​IMG]
    F4U Corsair​

    Wayne
     
  20. Luke

    Luke Well-Known Member

    For some reason I get now only 15-16 miles EV indicated after full charge since last week (before 17-18 miles). And today I only got 13 miles EV actual range.
    I'm suspecting it's because temperatures dropped. Today it was only in the 40's and seems that has a big impact on EV range.
     

Share This Page