Gas mileage - Kia K900 Forum
 
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post #1 of 6 Old 06-20-2018, 10:29 PM Thread Starter
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Default Gas mileage

So, what's the realistic real-world MPG for a loaded V8? Right now, in Eco mode and driving fairly lightly, I'm at 13.2 average in the city--well short of the EPA estimated 15 MPG. Should I suspect something's not quite right with the driveline somehow?
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post #2 of 6 Old 06-21-2018, 06:48 AM
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That’s pretty much what I see for all stop and go city neighborhood driving. If you do a little interstate driving, it will pop up to the 15. It’s a big engine after all.
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post #3 of 6 Old 06-21-2018, 12:53 PM
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I get about 15 to 16 mpg in the city (including traffic clogged city highways) and 22 to 25 on the interstate, depending on conditions. I drive fairly aggressively and seldom use eco mode. I have noticed that using pure gasoline instead of the usual 10% ethanol swill gets me about a 1 to 1.5 mpg boost. I keep my tires inflated to 33 psi front and 35 psi rear, which is higher that the 31 psi front and rear recommended on the placard because I find I get better handling. The higher pressure may improve fuel economy slightly as well.

A lot will depend on where you are driving and other things. Traffic, hills, poorly timed lights, poorly maintained roads, ethanol in the gas, weather, tire inflation, the type and weight of oil the the crank case and other variables will all work to affect fuel economy.

Last edited by Zathras; 06-21-2018 at 01:07 PM.
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post #4 of 6 Old 06-21-2018, 06:50 PM
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My 4 month average is 22.1 mpg using Premium. Not bad, but I'm out in the boonies so mostly hwy driving. I just leave it in Normal mode. Eco is too laggy, and Sport is too twitchy on the gas pedal (based on feedback from the boss in the passenger seat).

A lot better than the 5.7 Hemi in my Ram that I couldn't get an avg over 15 if my life depended on it.

2015 K900 - Black on Black, VIP package
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post #5 of 6 Old 06-25-2018, 09:52 PM Thread Starter
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Well, somewhat weirdly, things are improving on the second tank. I took it out of Eco and put it in Smart mode, and I'm actually inching above 15 now. (On top-tier premium, per the manual's instructions.)

BTW, what does it mean when the Smart indicator changes between white and blue?
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post #6 of 6 Old 09-10-2019, 01:51 PM
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Blue is usually used for Eco, so I'd guess you're doing well if it shows blue.
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