Clarity PHEV Range

Discussion in 'Clarity' started by mattheo0118, May 18, 2020.

  1. mattheo0118

    mattheo0118 New Member

    Hey all,

    Looking to see what your thoughts on this are.

    I traded in my Acura RL and bought a 2018 Honda Clarity Base. I put 8,500 miles on the car after 11 months then traded it in. ~82% on EV / 18% on gas

    I traded my Base Clarity in and got a New 2018 Honda Clarity Touring because I wanted power seat adjustments. I couldn't get comfortable in the base model because it had the manual adjustment. I currently still have my Clarity and it currently has 6,987 miles. (I travel for work so I dont drive as much as your typical American). ~90% on EV / 10% on gas.

    One thing i noticed is that my Base Clarity got way better Electric Range than my Touring.
    Base Model: (highest ever: 64.2 miles / Lowest ever: 44.8 miles)
    Summer: 57 mile range on screen (Actual 51 miles)
    Winter: 52 mile range on screen (Actual 46 miles)

    Touring Model: (highest ever 56.1 / Lowest 42.8)
    Summer: 52 mile range on screen (actual 45 miles)
    Winter: 48 mile range on screen (actual 41 miles)

    The car has consistently been showing 46-48 on the last 5 full charge... I dont understand it, the temperature outside has been 70-80 degrees.. My old Base Model did so much better per charge than my Touring... My driving habits, routine hasn't changed, My trunk only has a first aid kit, the 120v charger and an 25' extension cord. I'm shocked by the difference.

    Do battery performance vary between cars?
    Is the Touring that much heavier than the base?
  2. insightman

    insightman Well-Known Member

    There are a bunch of threads on this forum about EV range. Can you get your dealer to do the battery capacity test described in the PDI document? How long did your Clarity sit around in a dealer lot uncharged before you purchased it? You can find the manufacturing month/year on the sticker on the driver's door jamb.
    Cash Traylor likes this.
  3. mattheo0118

    mattheo0118 New Member

    The car had ~50% charge when they pulled it up from the lot.

    Vin# is higher than 24,000
  4. MrFixit

    MrFixit Active Member

    As pointed out, there are many threads discussing EV range.
    The battery capacity (only accessible through a simple dealer scan) is the only thing that really matters and is unambiguous.

    One very plausible theory that has emerged quite recently in the forum is the fact that people are able (and have been) driving significantly faster because of the substantial reduction in traffic due to coronavirus stay-at-home measures. A small difference in average speed have a significant impact on EV range.

    The numbers you reported only show a ~10% loss. Easily explained by an average higher speed.

    Although I did just notice that you are reporting this change from well before coronavirus...
    Best suggestion is get the battery capacity measurement at the dealer... Will quite likely be free.
  5. stacey burke

    stacey burke Active Member

    You are only using the guess-O-meter and that is just not accurate. The gauge on the left side of the cluster is showing the charge left in the battery and is accurate. I guarantee you if you drive until you have used up the charge, your real miles will NOT equal the number that is on the guess-o-meter.
  6. mattheo0118

    mattheo0118 New Member

    California speeding tickets are very expensive so I never drive above 72mph..

    I'm not using the guess so meter, in reset my trip Everytime I fully charge my battery.

    Good advice on the battery testing.. I'll give my service adviser a ring.. I don't want them to charge me since the car won't test below the replacement threshold
  7. MrFixit

    MrFixit Active Member

    Was it the same dealer for both of your Clarity's?

    I think you have a compelling story, and would certainly expect them to gather this data without charging you. It is a VERY simple test for them. It should have been done pre-delivery, and it often is not. If this was not done for you originally, then you have an even more compelling reason they should now do it at no cost.

    Just be sure to clarify that you want the HV battery capacity (as identified in the PDI) or they might just test your 12V battery. I suggest you bring a copy of the PDI with you and point to it so it is clear...

    I have attached the PDI document for reference. Have a look at the last page (page 13) to see how this parameter is presented. It should nominally be 55 Ah for a new vehicle as shown on the example in the PDI. Please keep us posted if you can get a readout. Several of us have been interested in exploring potential HV battery degradation.

    Although I don't have an explanation for your observations, my instinct is that your car is just fine. I don't think it is warranted yet, but occasionally a cold-reboot (disconnecting the 12V battery and re-connecting it) can clear out some anomalous behavior. It results in a host of ominous errors but they clear out after driving a short distance. Again, I would not recommend that at this point.

    Attached Files:

  8. mattheo0118

    mattheo0118 New Member

    Yes same dealer,

    Thanks for the advice, I'm bringing it in June 2nd.

    Last two full charges shows 46.4 on the screen and I got 38 and 39 miles, same route routine. What the heck is going on with my car?!!!
  9. Robert_Alabama

    Robert_Alabama Well-Known Member

    I've got a 2018 touring with 15,700 miles. Driving 70+ mph, I would probably get upper 30s as well. I drove mine today, 89 degree weather, climate control at 66 degrees F and driving at 50 mph for about 30 miles, 65 for about 20 miles. Got 51 miles before exhausting the battery charge about 1/2 mile from my home.
  10. mattheo0118

    mattheo0118 New Member

    Your info is what I experienced with my first Clarity...

    This one, I can't get anything near 50 miles per charge. It's been 72* in San Diego the past few weeks. That should be ideal temp for ev efficiency.. no AC used either

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