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Discussion Starter · #1 ·
I am very disappointed with my SX Turbo’s fuel economy numbers. On I-40 through NM and TX, I was only averaging 24.4 mpg highway with 78 mph average speed. I fill it up with 88 grade gas because in Northern NM and TX, their lowest grade is 86. Through OK, MO, IL, and IN, I average 26.8 mpg. I use adaptive cruise control and HDA on all of the highway driving. What is going on? What confuses me more is that during the break-in period on the hills and valleys of Northern Arizona, I average 30mpg city driving with SMART mode!

I had better mpg with my previous vehicle - a Mazda 2.5 liter Turbo AWD!
 

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2021 Kia Seltos SX - Gravity Grey
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Western NC to Raleigh then on to Savannah I averaged pretty much on the dot of 30mpg and usually found myself at 75mph. I did notice that 70-72 seemed to be the sweet spot for mpg and above 72 it would start to drop at a noticeable rate. Enough so that 75 is where I wanted to top out to make each part of the trip on one tank. Dropping to 24mpg at 78mph does seem a bit extreme while on fairly flat roads though. Daily driving up in the mountains I see about 22-24 average in and around mostly town driving. SX Turbo as well.
 

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Discussion Starter · #3 ·
Western NC to Raleigh then on to Savannah I averaged pretty much on the dot of 30mpg and usually found myself at 75mph. I did notice that 70-72 seemed to be the sweet spot for mpg and above 72 it would start to drop at a noticeable rate. Enough so that 75 is where I wanted to top out to make each part of the trip on one tank. Dropping to 24mpg at 78mph does seem a bit extreme while on fairly flat roads though. Daily driving up in the mountains I see about 22-24 average in and around mostly town driving. SX Turbo as well.
Yes, I think so too, that going above 72 will hurt your mpg. I set my ACC at 78 (3 over) and sometimes 80 (5 over). What bugs me though is that I get better mpg from my previous vehicle with the same driving style - ACC at 3 or 5 over limit.
 

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I have the Turbo 1.6l and am generally impressed. I know this is in metric, and will need to be converted but City driving I generally get 7.5-8L/100km and Highway I get 7-7.5L/100km.

I don’t drive easy in the city and highway I’m from 100-140kmh.
 

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Discussion Starter · #5 ·
I have the Turbo 1.6l and am generally impressed. I know this is in metric, and will need to be converted but City driving I generally get 7.5-8L/100km and Highway I get 7-7.5L/100km.

I don’t drive easy in the city and highway I’m from 100-140kmh.
In the US there is a S turbo and a SX turbo. I don’t know the difference but which one is yours?

3.78 liters per gallon.
1 km = .6 miles

You get more or less 28 mpg in the city and around 31 mpg on the highway. That’s great. I don’t know why mine is bad.
 

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In the US there is a S turbo and a SX turbo. I don’t know the difference but which one is yours?

3.78 liters per gallon.
1 km = .6 miles

You get more or less 28 mpg in the city and around 31 mpg on the highway. That’s great. I don’t know why mine is bad.
In Canada we just have the SX which is the fully loaded (with some features the American model doesn’t even have) with the 1.6 turbo engine. All other models are the 2.0l engine.
 

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2021 SX Turbo, Neptune Blue
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I also feel that the mpg isn’t great at all for the Turbo. I don’t look at my average MPG anymore, but it was always around 23 or 24 when I used to look. Most of my driving is highway commuting to work at 80 mph. There is no way to go slower as most people are driving faster than me even though the speed limit is only 70 mph.

What bothers me even more is that the gas tank is so small. I feel like I am always at the gas station.
 

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Discussion Starter · #8 ·
I also feel that the mpg isn’t great at all for the Turbo. I don’t look at my average MPG anymore, but it was always around 23 or 24 when I used to look. Most of my driving is highway commuting to work at 80 mph. There is no way to go slower as most people are driving faster than me even though the speed limit is only 70 mph.

What bothers me even more is that the gas tank is so small. I feel like I am always at the gas station.
Yes, as I have pointed out on my original post that my previous ride had better fuel economy than this Seltos. One poster replied that the sweet spot for the Seltos is about 70 - 72 mph. Well, I drive through the Turner turnpike in Oklahoma and the speed limit on that highway is 75mph and there is a stretch on that turnpike near Tulsa that has 80mph limit! If I maintain at the sweet spot, I would be mauled by truckers who even drive 5 over the limit. Very disappointing. Looks like the Seltos turbo is gasping for air at high rpm!
 

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2021 SX Turbo, Neptune Blue
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Yes, as I have pointed out on my original post that my previous ride had better fuel economy than this Seltos. One poster replied that the sweet spot for the Seltos is about 70 - 72 mph. Well, I drive through the Turner turnpike in Oklahoma and the speed limit on that highway is 75mph and there is a stretch on that turnpike near Tulsa that has 80mph limit! If I maintain at the sweet spot, I would be mauled by truckers who even drive 5 over the limit. Very disappointing. Looks like the Seltos turbo is gasping for air at high rpm!
It’s definitely a very response and powerful engine/transmission setup, but you definitely pay the price. I recently watched a video video review of the Turbo Seltos in which the reviewer described it as being thirsty- and it surely is.
 

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Discussion Starter · #10 ·
It’s definitely a very response and powerful engine/transmission setup, but you definitely pay the price. I recently watched a video video review of the Turbo Seltos in which the reviewer described it as being thirsty- and it surely is.
Yes, I like the responsive engine. I like the SMART mode in the city driving. However when you engage the cruise or when you shift it to manual mode on the highway, it turns off the SMART mode! When I drive on the highway, I do ACC with manual mode at 7th gear. I do manual because I don’t want the engine to rev up really high when negotiating an incline to maintain the cruising speed. I just let the engine slow down a bit and let it pick up the speed at the top of the hill. Sometimes I shift it to 6 on long inclines especially on I-44 in MO. In IL and MO, the speed limit is 70 so I gain mpg there because that’s the sweet spot of this Seltos turbo. I’m still disappointed. Although I am very pleased with how relax I was during my 1,800 mile trek last week. With ACC and LFA, yes, it was no stress!
 
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