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EV Mode at highway speeds (if only for a few seconds)

Discussion in 'Gen 4 Prius Technical Discussion' started by pakitt, Dec 6, 2016.

  1. pakitt

    pakitt Senior Member

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    Yesterday commuting to work, my Gen4 entered EV mode at 106km/h // 65mph...! And this was happening at -2C // 28F!
    What is the max allowed EV only speed? what is the max EV speed with the ICE still rotating (I had that yesterday - the fuel consumption went to zero, but the EV light was not on - at around the same speeds).

    I could drive like that for about 10 secs, then speed slowly went down and I had to apply more pressure on the gas pedal to keep up with traffic.

    It is a weird feeling seeing the Gen4 going EV mode at these speeds....!

    PS: even if the temps here now are around 0C // 32F, fuel consumption is consistently at least 20% lower than Gen3...!
     

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    #1 pakitt, Dec 6, 2016
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  2. alanclarkeau

    alanclarkeau Senior Member

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    I see that often - I've a regular 100km/hr commute which has some gentle inclines both up and down, going down, it will generally use only EV at times. If a car in front changes speed, it'll even regenerate /EV alternating.
     
    #2 alanclarkeau, Dec 6, 2016
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  3. RCO

    RCO Senior Member

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    That goes for me, as well.:)
     
    #3 RCO, Dec 6, 2016
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  4. Prodigyplace

    Prodigyplace 2025 Camry XLE FWD

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    I believe Gen 3 does something similar on my son's 2015 Prius v.
     
    #4 Prodigyplace, Dec 6, 2016
  5. dstahre

    dstahre Member

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    It's my understanding that Gen4 vehicles are capable of going into EV mode as high as 68 mph.
     
    #5 dstahre, Dec 9, 2016
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  6. Tideland Prius

    Tideland Prius Moderator of the North
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    110km/h is the limit. Soft limit I'm guessing. Cause just like the Gen 3 and its 70km/h limit, I've gone into EV at 73 or 75km/h without the engine spinning but it's only under specific conditions (usually involving a decline of some sort). 90% of the time, it's 70km/h.

    It is weird to see it go into EV at those speeds. I had it happen once at 100km/h. It was pretty cool. It was a slight decline on the highway in the US and normally the Gen 3 will be in pseudo EV mode where it's battery-to-wheel but I know the engine is pumping somewhere. In the Gen 4, it really is pure EV.
     
    #6 Tideland Prius, Dec 9, 2016
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  7. RCO

    RCO Senior Member

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    I concur. That happened for me last weekend while highway cruising at 70mph. Cool, huh?
     
    #7 RCO, Dec 9, 2016
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  8. That_Prius_Car

    That_Prius_Car Austin Kinser

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    Gen.IV EV top speed is 74 mph. (The only pics I have are at 72 mph in EV.) But as soon as it switched from 73 mph to 74 mph, the EV icon went away and the engine came on.

    I did notice that the car will routinely switch to EV at 60-65 mph and do a good job holding it for a half mile to a mile or so.
     

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    #8 That_Prius_Car, Dec 14, 2016
    Last edited: Dec 14, 2016
  9. RCO

    RCO Senior Member

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    Who's wrong? I think I'm in agreement with you - and at lower temperatures!
     
    #9 RCO, Dec 14, 2016
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  10. That_Prius_Car

    That_Prius_Car Austin Kinser

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    Ha, I didn't mean wrong... in the sense of being rude..more like, here's the EV top speed. :)
     
    #10 That_Prius_Car, Dec 14, 2016
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  11. RCO

    RCO Senior Member

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    Oops. I misunderstood, sorry. :D
     
    #11 RCO, Dec 14, 2016
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