3.3TT Whack mpg?

[playerbase]

Hello fellow stinger owners!



I was just going through the forums and noticed people are getting completely different mpg compared to me with their 3.3l, but mines dropped recently.



I went on a cruise, just a relaxing 150 mile cruise, don’t know how fast I was going just went as fast as everyone else around me, 15% city 85% highway and I manage to get 34.4mpg in my Stinger at the very end of it.

https://imgur.com/a/NS8N0Ha

I’m guessing my mpg is way off considering others are averaging around 25mpg, how would I make it more accurate if it’s as inaccurate as it seems, what’s the highest mpg you’ve achieved in your 3.3l?



Anyways, recently I’ve been commuting 500-600 miles a week, and my mpg has dropped significantly to what I use to get. I’m averaging 24-26mpg which seems more realistic but what threw it off by so much initially?

 

[D.J.]

Was your trip a 1 way trip of 154 miles? was it all downhill? what was the elevation of your start and endpoint?
Was the wind at your back the entire trip?

 

[playerbase]

Was your trip a 1 way trip of 154 miles? was it all downhill? what was the elevation of your start and endpoint?
Was the wind at your back the entire trip?

2 way, 72 going, 72 coming back. Elevation was mixed, and I don’t believe there was any wind. Just a warm day that’s about it. 70-75f

 

[MerlintheMad]

Yeah, I've obtained over 31 MPG on single stages two or three times on road trips over the last three and a half years. The rest of the time it shows between c. 24 and 27 MPG on the highway and mixed shows between 19 and 23 MPG.

 

[D.J.]

Of the 1.4 million real world miles tracked so far on 3.3L V6 turbo stingers (95 participants)....

Anything over 28 is a statistical outlier. Actually, even 28 is an outlier.
18 to 25 seem to be about the norm.

Kia Stinger MPG - Actual MPG from 123 Kia Stinger owners

The most accurate Kia Stinger MPG estimates based on real world results of 2.9 million miles driven in 123 Kia Stingers

www.fuelly.com

 

[badfrogg]

Does the broken gas gauge thing cause this? You could check it the old fashion way…

 

[playerbase]

Does the broken gas gauge thing cause this? You could check it the old fashion way…

I’m not sure, I just got the car earlier this year in April and bought it at 20k miles, the first 10k were great. I’m at 39k now and my mileage has dropped a fair amount commuting, 100 miles a day, 5% city 95% highway

 

[badfrogg]

Yeah, so fill it up, drive your 100 miles and then fill it again. How may gallons did it take? Divide the 100 miles by those gallons = MPG. shoud be 4 or so gallons. the gas guage should fall to about 2/3 of a tank in 100 miles (1/3 used).

 

[87and66]

I average 21. On a couple of 3 hour highway road trips i took over the summer, i got 28, I've only been over 30mpg a couple of times since I got the car in feb 2019. This is all going off of what my dash says. I've never bothered to calculate it when I fill up to verify. But it seems pretty accurate

 

[nhcowboy28]

If you ain’t using a calculator at fillup, you are just kidding yourself looking at the guage calc.

 

[vipeboy2000]

If you ain’t using a calculator at fillup, you are just kidding yourself looking at the guage calc.

can get a decent feel once you have done a lot of manual calculations to compare to the in car mpgometer... pretty much tank i reset the car's computer as well as do the math manually and the computer is almost always 1 mpg optimistic and at most 2 mpg a couple times for my driving over a tank used. Couple times it has been pretty much spot on to the tenth.

 

[87and66]

If you ain’t using a calculator at fillup, you are just kidding yourself looking at the guage calc.

doing quick math, I typically drive a little under 300 miles and get 14 gallons of gas afterward. comes to 21.4mpg. Pretty accurate. Obviously not exact, but it aligns with what the car says.

 

[Kimberly Lazarski]

I got far better fuel mileage with a 5.7L 32 valve v8 than I do with the Stinger. My highest trip average so far using HDA the while way for a 190 mile drive is 31mpg. I usually get 26-27mpg for tanks where I drive mostly highway. 16mpg if my driving is mostly around town, but I do accelerate quickly most of the time. Drive it like you stole it!

 

[Maljey]

I average 21. On a couple of 3 hour highway road trips i took over the summer, i got 28, I've only been over 30mpg a couple of times since I got the car in feb 2019. This is all going off of what my dash says. I've never bothered to calculate it when I fill up to verify. But it seems pretty accurate

Yeah my lifetime average thus far is around 20.5 mpg. Thats with about 6800 miles on the car right now.

The majority of my miles are highway as well, but my morning commute has more stretches of uphill driving on the parkway (er..highway).

My home commute is of course more downhill driving, but I find that I lose more mpg going uphill than I gain going downhill.

 

[HighFlyingOwl]

Does the broken gas gauge thing cause this? You could check it the old fashion way…

What’s the “broken gas gauge thing” that you mention?

Mine’s all over the place - filled it to the brim and ten miles later the needle is at 7/8ths. The range calculated is dropping way quicker than it should, too.

 

[MerlintheMad]

What’s the “broken gas gauge thing” that you mention?

Mine’s all over the place - filled it to the brim and ten miles later the needle is at 7/8ths. The range calculated is dropping way quicker than it should, too.

Sounds like a defective gas tank sensor/float.

 

[badfrogg]

Yeah, There is a thread here somwhere that talks about defective gas level sensors. I think several people have this issue.

 

[chad1064]

Something to keep in mind is the HVAC system and whether or not the AC is on. Running the compressor can significantly impact mileage, especially in city traffic. This isn't just the Stinger, it's on any vehicle, but might help explain one of the factors in everyone's different mileage.

OP, your gauge cluster showed 61 degrees (and ECO mode) so you probably didn't have AC on, which would help get you higher mileage.

 

[HighFlyingOwl]

Something to keep in mind is the HVAC system and whether or not the AC is on. Running the compressor can significantly impact mileage, especially in city traffic. This isn't just the Stinger, it's on any vehicle, but might help explain one of the factors in everyone's different mileage.

OP, your gauge cluster showed 61 degrees (and ECO mode) so you probably didn't have AC on, which would help get you higher mileage.

Yeah I'm driving around in ECO with AC etc turned off to try and make everything as predictable as possible.

I've noticed that things are getting slightly better the more I use the car. There are times now where I actually drive around a mile and see the range drop by a mile. Is it possible that, having only had the car a few weeks, that the range is still acclimatising to my driving? For example, if the previous owner sat on a motorway for 2 hours each day, they'd get more miles out of a tank. I don't, so I won't. Just wondered if there were some calculations going on somewhere that are still 'learning; for want of a better term.

 

[rpoffen]

Something to keep in mind is the HVAC system and whether or not the AC is on. Running the compressor can significantly impact mileage, especially in city traffic. This isn't just the Stinger, it's on any vehicle, but might help explain one of the factors in everyone's different mileage.

OP, your gauge cluster showed 61 degrees (and ECO mode) so you probably didn't have AC on, which would help get you higher mileage.

FYI, on Kia's the compressor is turning all the time, there is no clutch as in many other makes/models of cars. The compressor is a VDC (Variable Displacement Compressor) type, that uses an internal mechanism to change the amount of travel the piston moves based on demand. When the A/C is not on, the piston does not travel up and down.
Also note, in colder weather you might use the defogger/defroster, and if so, the A/C compressor will run to dehumidify the air.