2018 Kia Niro PHEV EX - Kia Niro Forum
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post #1 of 23 (permalink) Old 07-21-2018, 04:40 AM Thread Starter
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2018 Kia Niro PHEV EX

I purchased a 2018 Kia Niro Phev EX a week ago. I am concerned if I operate the Niro Phev continually on battery power will the gas engine suffer from non use? If so, is the Niro Phev programmed to automatically force the gas engine to run if it senses that it hasn't been operational for a set number of hours? I asked a couple of Kia service reps but they each said they didn't know. Would it be a good idea to run the gas engine for a day or two at least monthly? Does anyone have an answer to my question? Does anyone else share my concern about non use of the gas engine? I have a very short work commute so I can operate continually in the electric mode. And I can get around our small rural community on electric power only too. I can do three days of local driving on just one electric charge. As it is I never plan to have more than a half tank of gas in my Niro Phev because I'll rarely need to use gasoline. Any information regarding my concern for the gas engine would be appreciated.
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post #2 of 23 (permalink) Old 07-21-2018, 07:28 AM
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I posted a thread called "Fresh Fuel" where I asked about gas sitting in the tank for perhaps months on end. I've had my PHEV for 7 weeks and I've barely used the gas engine (ICE). You're not supposed to leave fuel for months in your lawn mower so I was thinking the same might apply to my car. There were suggestions to put an additive in like Sta-bil. Or just take it for a long drive every few months. The ICE has kicked in every once and a while - when I've gunned it for passing or merging or when I've driven 40+ miles on a longer errand. So I'm not too concerned about engine disuse.

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post #3 of 23 (permalink) Old 07-21-2018, 02:57 PM
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Drive in sport mode once in awhile. That will burn your gas up.
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post #4 of 23 (permalink) Old 07-21-2018, 06:08 PM
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Originally Posted by egmacrae View Post
Drive in sport mode once in awhile. That will burn your gas up.
this is what I did today. 30~35 mpg

It's not a sports car, but it moves pretty darn well especially off the line due to the 200 ft lbs of torque. Given a 16 to one 1st gear final drive ratio, that's 3200 ft lbs at the tires!!!

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post #5 of 23 (permalink) Old 07-21-2018, 06:50 PM Thread Starter
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ICE of Kia NiroPlug In

Thanks everyone for their practical advice regarding my concerns for the gas engine from non use. With all the computer technology in this vehicle I thought it might be possible that Kia may have programmed tracking non use of the ICE for preventative maintenance purposes.
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post #6 of 23 (permalink) Old 07-21-2018, 08:33 PM
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Thinking along the same line I was worrying if the engine might need to start at idle if it hasn't been run for awhile to oil up the upper end before it kicks in at speed.
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post #7 of 23 (permalink) Old 07-22-2018, 12:54 AM
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I believe you are all worrying a bit too much...

Remember, the entire drive train (including the ICE) comes with a 10/100 warranty, so unless you're putting on massive mileage, you're covered - at this point, we are all covered for a lot of miles/years.

Since the Niro is a new model, WE are Kia's guinea pigs - or, if you prefer, Kia's canaries. This is, in reality, a part of being an "early adopter" (owner of a new model). We are the beta testers. We provide the data points for Kia to debug and improve their work.

Expect some bugs to be worked out. All new models have 'em. So far, the Niro's issues seem to be pretty minor for the majority of owners.
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post #8 of 23 (permalink) Old 07-22-2018, 10:01 AM
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No issues with Prius PHEV from "old" gas, or the Volt. Pretty much a non-issue unless you are going to park a modern car for several years. The gas tank is sealed in a way that older cars are not. Gas mowers are often cited as an example of concern, but their tanks and old fashioned carburetors are effectively open and evaporate over the winter months they are not used and gum things up. The Niro has direct injection, not even open to the manifold and the tank is pressurized.

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post #9 of 23 (permalink) Old 07-22-2018, 04:26 PM Thread Starter
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ICE Fluids

My concerns regarding significant under use of the gas engine was not so much about stale gas as it is about not moving fluids like oil, anti-freeze, transmission fluid etc. For my driving needs, I could go electric 95 to 100 percent of the time. The only time I would need to use the gas engine is making longer trips to Costco,Walmart and the Kia dealership in neighboring communities. I make trips to those two stores on average every two months. If not routinely moving fluids by running the gas engine is not a concern, then there's no issue.
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post #10 of 23 (permalink) Old 07-22-2018, 06:44 PM
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The engine decides when it needs to run. Has to run on a heat call of course to warm the interior. There is no transmission fluid, the DCT and engine clutch are dry. I think with most modern cars, other than battery, they can sit unused for a year (sometimes do before they are sold) without an issue. The old wive's tales and common wisdom have no relevance.

Have faith and be happy your engine isn't smoking old dinosaur residue without good reason.

Sounds like a short range BEV would have suited all your described trips just fine.

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