Post your Gas Mileage : Calculated

I've had over 25 cars... Drove another 100+ cars that I maintain(ed) for friends and family. Drove thousands of cars while working for body shops and car dealerships back in the day... Automatic, DCT, DSG, CVT, manual, etc.
BUT... I have never driven a car that can coast as far as this ugly nugget can. I think if I hit top speed on one side of Texas and let go off the gas pedal - it will keep coasting all the way to the other side of Texas.
With that in mind - it should get incredible gas mileage, right?!? Wrong...still 26MPG. :rolleyes:
It has a very deceiving fuel gauge. It stays above "F" for about 120-150 miles, and then goes from "F" to "E" in about 120-150 miles. That illusion makes it feel more efficient than it is.
But, for some odd and unexplainable reason, I still like this little KIA Sephia. 🤷‍♂️
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It makes me wonder if when coasting the computer keeps feeding the engine some fuel, instead of cutting it completely like most EFI cars do. That would explain the incredibly loooong coasting times/distances, and such a low MPG for a 1.8L 4-banger.
 
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HAH, 601 miles on 10.6 gallons, so 56.7 mpg.
E15 was about 7% less per gallon than E10. I figured that fuel economy loss should be less than 2%, so this seemed like a deal and I filled the car with 10.6 gallons of the E15.
We'll see.
 
HAH, 601 miles on 10.6 gallons, so 56.7 mpg.
E15 was about 7% less per gallon than E10. I figured that fuel economy loss should be less than 2%, so this seemed like a deal and I filled the car with 10.6 gallons of the E15.
We'll see.
Lately Casey's here quit the discount for 88 octane E15. It came back a few days ago.
 
I thought I'd post an update. I do a random mix (which varies wildly from week to week) of highway and city driving weekly.

2020 Mazda CX-5 Grand Touring 2.5L
36700-ish miles.
Continental CrossContact LX25 tires (if anyone is curious)

Best calculated via Fuelly: 32.2mpg (during a road trip)

Most recent fill (4/27/24): 21.3 mpg
Prior fill with lots of highway miles(4/16/24): 27.3mpg—it could be higher if I could stop myself from enjoying the Zoom Zoom. ;)

Total tracked miles: 23514
Tracked average: 24.1 mpg
 
'13 HONDA Fit base : 1.5 Ltr. (E.F.I.) w/ 5 speed auto : Driving Mix (Hwy / City ) : 60/40 . Avg. Temp : 42 .


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Start of NEW tank :

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Fill up at Costco 87 octane TT E10, 85 % 4 lane hwy.

Some A/C use

Fuel-up Added​

38.9 MPG​

Details​

  • MPG: 38.9 / UK MPG: 46.7
  • G/100mi: 2.57
  • Miles: 457.9
  • Gallons: 11.78
  • Price: $2.93/Gallon
  • Total: $34.47

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'13 HONDA Fit base : ( 1.5 Ltr. w/E.F.I. ) w/ 5 speed auto . Driving Mix (Hwy/City) : 60/40 . Avg. Temp : 54 . Tires : 4 GENERAL Altimax RT43 (H) 175/65-15 (6/32s') @ 34 P.S.I.. Oil / Filter : P.P. 0w-20 (S.P.,GF-6A) w/ MOBIL1 M1-110A . Fill of winter blend (?) Top Tier (?) 89 w/ E10 .

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