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First drive fuel economy

Discussion in 'Gen 4 Prius Fuel Economy' started by shadow4478, Aug 19, 2017.

  1. shadow4478

    shadow4478 Member

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    just picked up our 2017 Prius
    Came with 777km on the odometer
    Dealer filled it up and we went for a drive150km
    Me and wife driving. We managed to average 3.2l/100km 73.5mpg
    Very impressed !!!!
     
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  2. jerrymildred

    jerrymildred Senior Member

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    WOW!!! And congrats on the new buggy. Hope it gives great smileage along with the amazing mileage.

    Be aware that the computer can be pretty optimistic, but that's still great efficiency. Many of us obsess about it to the point of building spreadsheets to track cost per mile, etc.
     
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  3. Sam Spade

    Sam Spade Senior Member

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    Yes, if you are taking the displayed number at face value, you may be disappointed with the actual number.

    But even if it is off by 10 MPG, 63 is still at the high end of what C owners have been able to achieve.......without unusual driving "techniques".
     
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  4. Mendel Leisk

    Mendel Leisk Senior Member

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    What level did you get?

    Disgustingly good mileage, I'm jealous. :p
     
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  5. shadow4478

    shadow4478 Member

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    I got the base model
    We where used to driving a 2002 Jetta TDI so lots of practice. They are both very close.
     
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  6. Sam Spade

    Sam Spade Senior Member

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    Is this really a C ?
    You might want to put that in your profile.......so people won't have to repeatedly ask.
     
  7. Tideland Prius

    Tideland Prius Moderator of the North
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    Congrats!! Wow 777km.. test drive vehicle?

    Either way, those are really good numbers!

    See? It's not just me :p. (And we have the 17" alloys. He'll get better than us soon)
     
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  8. TinyTim

    TinyTim Active Member

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    I think the Prius MPG is quite accurate if you factor in a full tank of gas over 500 miles. My 4.6 mile trip earlier this evening where I averaged 100MPG. When I see any trip under 10-15 miles I disregard the mileage in the computer. Your trip mileage on a tank after 200 miles (300km) is a pretty accurate read of what to expect from your entire tank.
     
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  9. mariposer

    mariposer Junior Member

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    I'm amazed, my first fuel up is 68.5 mpg for 590 miles.
     
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  10. MelonPrius

    MelonPrius Senior Member

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    CR and fuelly drivers are averaging 52-53 mpg real world driving on the gen 4. That's a big increase over the 3rd gen.

    The Ionic touts itself as having a higher EPA estimate, but based on the 2017 models on fuelly, it has the same mpg as the Prius.
     
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  11. shadow4478

    shadow4478 Member

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    ok let me update the original POST, we have winter now, my wife just drives it without trying, winter tires....
    AVG consumption is @ 5.0L/100km or 47 MPG
    I'm still able to get it to 3.5l/100 km when i try in the winter on a route thats at least 30km+ as temps are dipping into the low -15's

    still good.
     
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  12. Tideland Prius

    Tideland Prius Moderator of the North
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    They've got the summer mileage down pat but can't escape physics and winter is still a big hit. Still better than the 5.5-6L/100km I get in my Gen 3 with -20 to -30°C temps. (6.1L/100km was the worst tank when it dipped to -46.1°C [-35 within city limits] one morning and all through the tank, the daytime high was below -20°C and lows in the -30s)
     
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  13. RCO

    RCO Senior Member

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    Wow, I suddenly feel very chilly here at +8°C. ️
     
  14. TinyTim

    TinyTim Active Member

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    Here in the states we have the winter ethanol mix. People have convinced themselves that the cold weather significantly reduces their fuel economy. Come April 1st I would challenge anybody to buy 20 or 30 gallons of petrol/gas and save it for December 2018. Run your fuel tanks dry and put the spring/summer ethanol blend in your Prius. How many think they would get within a 1 or 2 of their summer driving MPG?

    This is my 2nd year of having my 2017 Prius 2. I am seeing mileage basically identical to what I got last December/January. My mileage always between 52-53MPG in the winter months vs. 56-59MPG during the spring and summer months on a tank of gas.

    In the winter months I have to really make an effort. My mileage is at 49.5 on 100 miles on the current tank. My last tank was 52.9MPG.

    There are world class Prius drivers here. People who know the tools of the trade of driving a Prius. If you do not focus on your driving, a winter tank can get as low as 45MPG with 47-49MPG easy to achieve.
     
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  15. Tideland Prius

    Tideland Prius Moderator of the North
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    Length of trip makes a difference.

    Also Seattle is different from Barrie (Northern Ontario).

    Setting the cruise control at 90km/h (56mph) at -45°C/-49°F, the instant fuel economy gauge in my Gen 3 was reading near 7.5L/100km (31mpg). Setting that speed in the summer nets 4.5-4.7L/100km (50-52mpg) so... yeah. There's a big difference.
     
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  16. RCO

    RCO Senior Member

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    Prius Chat Law: Low temperature = low mileage. Higher temperatures = higher mileage
    Other reasons for losing fuel efficiency include, but are not limited to, wind, rain/wet surface, low t y r e - pressure, fierce acceleration and braking.

    Had there ever been an eleventh Commandment, it would have read: Thou shalt not win all the time!

    Perhaps @Tideland Prius could write a sticky on the fuel consumption conundrum?
     
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  17. jerrymildred

    jerrymildred Senior Member

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    Or someone could do a study and create a graph showing fuel economy at various temperatures. :)
     
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  18. RCO

    RCO Senior Member

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    Just too many variables to even try, I guess!
     
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  19. Mendel Leisk

    Mendel Leisk Senior Member

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    During warm-up, turning off the cabin heat, or even just dropping the set temperature, can make-or-break engine shut-off. I'll do this just at red lights. Unless I'm really cold, or the missus reads me the riot act...
     
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  20. jerrymildred

    jerrymildred Senior Member

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    Yah, big difference between what I do with the hvac when alone versus having my Princess Bride along. In fact, I have a friend with a PiP that I should talk to about that. The happiness of my wife is essential to my own happiness.
     
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