Prius Plug-in Real World Fuel Economy

Does anyone here have the Prius Plug-in (4.4kwh or 8.8kwh battery model) and what fuel economy do you get (including EV mode)?

In EV mode, I understand the 4.4kwh model can go ~20KM, and the 8.8kwh model ~50KM on a single charge.

Some automotive websites report huge claims like 2.1l / 100KM (inc. EV mode):
https://www.motor1.com/news/30217/toyota-prius-plug-in-hybri…

But I'm curious to know your real world usage.

Comments

  • +3

    I'm copying my notes from another post, they might be relevant for you:

    I can offer some real-world data: The mileage on my MG HS PHEV, which means I get direct comparisons between petrol & EV on the same vehicle.

    Petrol-only mode: 7.4L/100km over 8000km of usage
    EV only mode: 26kWh/100km (commuting at highway speeds mostly, city driving would be lower) over 6000km

    With petrol averaging $1.80 over the last 6 months, that means my average fuel cost is $14.83 per 100km.
    With electricity (no solar, grid only) being 17c per kWh, that comes to $4.42 per 100km.

    That is ONE THIRD of the cost!

    Current fuel prices move this balance even further towards EV, and a solar system even more so. A pure EV vehicle with better efficiency might get 20kWh/100km which translates to even better costs per 100km driven.

    Note the MG has a 16.5kWh battery, and I'll get 50km of range at 100km/h. If I was city driving it'd likely be the rated 63km of range instead. Those Prius values look way over-exaggerated since that'd be basically double the efficiency I'm getting.

    • +1

      Thanks for sharing!
      What's your combined (hybrid+EV) l/100km?

      I'm trying to justify one of these Prius PHVs but I feel like with the ZLEV Road User Charge, buying a PHV Hybrid isn't as cheap as it seems. (https://www.vicroads.vic.gov.au/registration/registration-fe…). 2.1c / KM.

      From my calcs, assuming the cost of buying a hybrid is less than a PHV, and if I travel 10000KM per year on a PHV, and have to pay a ~$210 ZLEV tax, then to make the PHV worthwhile, I'd need the fuel economy to be something like 2L/100KM on the PHV which I don't believe is possible.

      • +1

        Just give my two bobs worth,Honda HRV Hybrid 2.9L/100 urban running.

      • +1

        The MG's stated rating is 1.6l/100km according to the standardised test, which is basically a worthless value. The actual average (with my rural usage patterns) is 3.7l/100km. This translates to an average of 800km per tank of fuel - mind you, that's only a 37L tank that I'm not draining to empty.

        Unfortunately the rules in Vic mean the gov't is double-dipping, and you're paying for k's that you've already paid fuel excise on, which sucks. However, you also have the rego discount of $100 so that would halve your actual additional costs to $110 instead.

        My opinion is that with the amount of fuel costs saved by using offpeak power, it'd still be worthwhile. Especially since you're doing less k's overall, and assuming most trips could be done electric-only, then your average fuel value would become significantly less than mine so 2l/100km is very viable. My daily commute is under 50km round trip so I basically use NO FUEL AT ALL until I get groceries once a week or so in the closest city.

    • +1

      I wonder where you have to live to get 17c per kWh,

      I live in the LaTrobe Valley, surrounded by power stations and getting charged 28-29.7c per kWh. Sure sucks getting charged nearly double to breathe in their pollution.

      • +2

        That's off peak rates.

        Peak is now up to 33c cents after the 1st of July

  • +3

    Does anyone here have the Prius Plug-in (4.4kwh or 8.8kwh battery model) and what fuel economy do you get (including EV mode)?

    The plugin models weren't sold in Australia directly by Toyota, so any around would be imports from Japan. So very limited.

    The prius hybrid (non PHV models) get about 4-5l/100km in real world driving. I can only assume the PHV would get something similar once the battery is depleted to the point it returns to hybrid only mode.

  • +1

    Fuel economy of a plug in hybrid is entirely dependent on what mix of EV/ICE you use. Drive within the battery range every day and you’ll use only enough fuel to ‘keep the engine in good condition’. Drive twice the distance of the battery every day and you’ll be buying a lot more fuel - but around half what you’d use if you drove 3x the battery range.

    In my example I’d drive likely 5 days per week on EV only and maybe 30-50km on ICE on the weekend.

  • +1

    Does anyone here have the Prius Plug-in (4.4kwh or 8.8kwh battery model) and what fuel economy do you get (including EV mode)?

    Hang on… I'm pretty sure this vehicle doesn't exist here (?). Who would know?

    • +2

      Hang on… I'm pretty sure this vehicle doesn't exist here (?). Who would know?

      As above, it's a import. There is one on carsales for sale if you are keen.

      • +1

        I'll be right thanks

  • +2

    Any WLTP fuel economy rating for a PHEV is going to be unrepresentative of real world driving conditions. It's going to be calculated from driving entirely on EV power until the PHEV battery is dead, then functioning as a parallel hybrid for the rest of the optimised test cycle.

    This is great if you only ever drive 100km and stop and recharge your PHEV battery to 100%. In the real world, your fuel economy is likely to be approximately double the WLTP rating depending on how often you start your trips at 100%.

    I reckon this is a false economy. My Yaris Hybrid does 3.6l/100km without lugging around a big heavy PHEV-capacity battery.

    • +1

      Yup, totally agree.I am in the same situation.Honda HRV Hybrid, under 5L/100 on the highway.Well under 4L/100 urban driving.Stuff having to charge all the time with a Phev.

      • +1

        Absolutely. Don’t worry about plugging in to your house once a day and instead go out of your way to purchase an expensive fuel source more often.

        I think they should be building wireless chargers or robot arms to plug in for you.

  • +1

    Fuel/electric savings sound good in some of these posts, how long is the usable life of the car battery though and should a replacement battery be factored into any 'savings' if the car is going to be kept for any length of time?

    • +1

      should a replacement battery be factored into any 'savings'

      Can't say.

      But from the Toyota and Honda dealers I've spoken with, they say the battery should last the life of the car - that's also consistent with a Hybrid & EV mechanic I spoke to as well.

      The mechanic mentioned he's only had to replace an entire battery once ever because the car was left idle without charging for too long and all cells died - replacing the battery is anywhere between $2000-$5000 depending on the car.

      If the cell dies in a battery, I believe that's a much cheaper and easier fix (~$800).

  • Just to further boost this discussion.PHEVs are now tanking in sales in Europe.France was down 28% & Germany 16% which was formerly a stronghold for Phev sales.UK has also experienced declines.Beginning of the end for the plug in?Hyundai has axed the Ionic range that included a PHEV.Interesting days ahead for this technology.

  • +1

    If anyone's curious, I ended up buying the 2013 Prius PHEV.

    Managed to achieve 1700KM from a single 45L tank (95 RON) giving me about 2.7L/100KM.
    Could have got more KM if most of my trips were within a ~9KM range.
    Most of my driving was going to the local shops (1-8KM away), and weekend trips into the city (I'm about 25KM from the Melb CBD).
    I couldn't find any charging stations with the Prius plug so you'll need a J1772 plug converter to…whatever Tesla's use…if you plan to charge in the city.

    I then sold it after 3 weeks because the drive felt weird. There was nothing wrong with the car, but there were quirky characteristics I just couldn't get over. For example, the steering, and acceleration was lifeless/no feedback, the steering wheel is oval so turning never felt linear and a bit unpredictable.

    It came with lowered springs so it surprisingly handled very well on mountain roads and stayed pretty flat.

    In saying all that, it's by far the most comfortable car I've owned and would recommend it if you're happy to pay >$20K for one in good condition, and don't mind the lifelessness of the car (thoroughly test drive it first!)

    Would I get one just to save on fuel? It depends. You'll need to calculate your "payoff period" (savings in fuel, rebates, etc) versus buying a car you actually wanted.
    For me, the thing was, if you already have $20K to spend on a car, you're probably someone that can afford petrol, and you've got heaps of sporty and practical options that can deliver reasonable fuel economy (~7L/100KM), so you can get a car that ticks a lot of boxes, versus a car that doesn't do well at everything except fuel economy.

    This car only makes sense to me if it was in the $10-$15K range because the payback period is quicker, and you're not sacrificing driving experience for the sake of fuel economy, and you're probably someone that's budget conscious.

    I've also never been aggressively overtaken so many times in a car. It's like people either see a Prius and want to swipe it off the road, or the acceleration was so bad everyone got upset with me and cut me off lol :')

  • +1

    Great fuel economy!That is we’re Hybrids really excel in the suburbs, running on pure electric most of the time.I notice my HRV Hybrid is much the same in the suburbs, but I do mainly highway running @ present, so it is in out of both modes.I would recommend just getting a petrol/Hybrid.

    • Yeah if your HRV drives like a regular car and not a lifeless corpse, I'd also just go for a petrol/hybrid :)

      • I had a Corolla Hybrid as rental awhile back,& found it fine.Quite responsive & very zippy.My HRV is certainly not like a lifeless courpse.

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