2018 niro fuel mpg. - Page 2 - Kia Niro Forum
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post #11 of 33 (permalink) Old 05-08-2018, 02:56 PM
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My trip display once read 78 mpg. Totally meaningless on short trips as you may have started with a full traction battery. Or a big tailwind.

My mileage per tank is about 600 currently, but the weather is still warming up so I'm hoping for new records.

I'd caution you about trusting the car's average display. Mine has varied from 3 to 7 mpg high compared to my calculated average per fill (I top off to the same place every time). I'm now at 47 mpg overall calculated average, but mostly very cold weather so far (warm now, but riding motorcycle - 68 mpg). My best tank has been 50 mpg, my current one is likely to end up 51 or 52 mpg. Still delighted, but expecting my annual average to en up over 50.

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post #12 of 33 (permalink) Old 06-08-2018, 11:39 PM
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460 miles today with the AC on the entire trip and 55.6mpg at 73 to 75mph.
It was over 100 degrees at times today as well.


Can't believe how well the car did. Really pleased with it the 24 hours I've owned it so far LOL!
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post #13 of 33 (permalink) Old 06-15-2018, 12:36 AM
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Had some crazy mileage on my PHEV yesterday. Trip display registered 160 mpg when I pulled into work. At one point on the drive in it was over 170. I know it is because I use EV mode on the freeway and traffic allowed me to only use the HEV mode a few times. Hanging in the mid 70's now. Loving this car. Just under 500 miles on my first tank, but still have almost half a tank of gas.
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post #14 of 33 (permalink) Old 06-15-2018, 02:58 PM
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Originally Posted by havensole View Post
Had some crazy mileage on my PHEV yesterday. Trip display registered 160 mpg when I pulled into work. At one point on the drive in it was over 170. I know it is because I use EV mode on the freeway and traffic allowed me to only use the HEV mode a few times. Hanging in the mid 70's now. Loving this car. Just under 500 miles on my first tank, but still have almost half a tank of gas.
Well, you have the plugin, so it doesn't really count.
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post #15 of 33 (permalink) Old 06-16-2018, 06:36 AM
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Seems like most PHEV owners end up with mid 70"s to mid 80's at home, at least as reported on the forums (I see more data on the Ioniq forum). Long trips are usually not reported, and unless destination charging is used daily, the mpg should be less than the standard hybrid because of the extra weight. But yes, PHEV reported mpg is super anecdotal and less comparable than hybrid owners chatting (which also is highly anecdotal, just less of a swing). But if I owned one, I'd brag too!

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post #16 of 33 (permalink) Old 06-16-2018, 11:11 AM
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oh, so doesn't the plugin part of the PHEV also get charged (if possible) when driving? I was under the impression that once the hybrid part of the car is fully charged, then the excess energy will go to charging the other battery. I am not exactly sure how that system works, but essentially, I thought that there was a bigger battery to charge for PHEV thus theoretically increasing the mpg, inspite of the heavier car.


So we had recently gone to WV to New River gorge, and there's a scenic tour one can do, that actually goes from the top of the mountain, all the way down to the river. My battery ended up fully charged well before I hit the bottom, so the excess energy was just wasted. Would not the PHEV being charged even more, in this situation?
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post #17 of 33 (permalink) Old 06-16-2018, 02:33 PM
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Originally Posted by yticolev View Post
Seems like most PHEV owners end up with mid 70"s to mid 80's at home, at least as reported on the forums (I see more data on the Ioniq forum). Long trips are usually not reported, and unless destination charging is used daily, the mpg should be less than the standard hybrid because of the extra weight. But yes, PHEV reported mpg is super anecdotal and less comparable than hybrid owners chatting (which also is highly anecdotal, just less of a swing). But if I owned one, I'd brag too!
This is also why Fuelly splits the Niro and the Niro Plug-in models. Unfortunately, fueleconomy.gov does NOT, which is going to severely skew their reported results.


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post #18 of 33 (permalink) Old 06-16-2018, 10:24 PM
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Originally Posted by dinesh75 View Post
oh, so doesn't the plugin part of the PHEV also get charged (if possible) when driving? I was under the impression that once the hybrid part of the car is fully charged, then the excess energy will go to charging the other battery. I am not exactly sure how that system works, but essentially, I thought that there was a bigger battery to charge for PHEV thus theoretically increasing the mpg, inspite of the heavier car.


So we had recently gone to WV to New River gorge, and there's a scenic tour one can do, that actually goes from the top of the mountain, all the way down to the river. My battery ended up fully charged well before I hit the bottom, so the excess energy was just wasted. Would not the PHEV being charged even more, in this situation?
Iíd like to know the answer to this as well...can anybody weigh in? I have a PHEV Prius owner that says his car does this.

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post #19 of 33 (permalink) Old 06-17-2018, 12:18 AM
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One traction battery, plus a 12 V battery. Software controls keep it charged between around 30 to 70% for long life. Deep discharges and overcharging shortens battery life. Most have experienced this with laptops and cell phones. A PHEV is a regular hybrid with a larger battery, nothing more. Two advantages over a "regular" hybrid, the main one is that you can plug in to charge the battery using your relatively cheap home power instead of the ICE recharging the battery. The other one, relatively rare, is you can recapture more energy going down a really long steep hill than the smaller traction battery before the car will turn on the ICE for engine braking instead of overcharging the battery with regen.

Two huge downsides of PHEVs. The main one is that they cost a lot more. All us taxpayers subsidize the tax rebates on PHEVs (plus enforce extra cost on manufacturers to make such cars to bring down their total fleet mpg). Otherwise there would be very few sales at all.

Eventually those subsidies will stop, and either demand (likely from fuel prices well north of $4) will keep these cars in production, or the cost of manufacture will drop (which is happening with battery cost in a significant way). But the extra stuff needed to plug in will always make such cars cost more than "regular" hybrids.

They also weigh a lot more, which is why they get less mpg than regular hybrids when not being plugged in - like on a long trip.

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post #20 of 33 (permalink) Old 06-18-2018, 10:46 AM
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From what I understand about the Ioniq PHEV, there's a "hybrid" portion of the battery and a "plug-in" portion, and the hybrid operation will not charge past the "hybrid" portion. I was hoping the Niro didn't work like this, but if the Ioniq does, the Niro probably does as well.

Source:

If this is the case, I'm glad I didn't hold out for the plug-in. I wouldn't benefit from the extra battery capacity for almost a year.


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