Post your Gas Mileage : Calculated

~2000 miles round trip to Canada in 2012 Honda Fit with 5 people and fully loaded gear maxing out weight limit. Break down is below:

1) first leg of 600 miles averaging 35.5 mpg. Vehicle is rated for 33 mpg and likely with one occupant and no gear. Tire pressure was 38 psi instead of 32 psi due to increased load. On flat surface, fuel economy was 40 mpg but that dropped to 35.5 once terrain became mountainous and long stretch of up hill requiring high rpm and downhill required slight down shift to maintain speed limit. There were also long stretch of 25 mph, 35 mph, and 45 mph through town.
2) City driving omce in Canada for almost 800 miles brought overall fuel economy to 32 mpg. Ontario roads were bad with pot holes and plenty of traffic lights. Middle leg only had 4 occupants instead of 5 and very minimal gears instead of fully packed.
3) Moderately pack gear and 3 occupants on return trip of 600 miles raised overall fuel economy to 33.5 mpg and my calculation is that the return leg itself averaged at 39 mpg when I drove and about 30 mpg when a new driver drove for 100 miles through hilly terrain with posted speed limit of 70 mph.

All three legs had A/C blasting due to the need to close the vent as the route taken was through industrial mountain towns with a lot of factories pitting out high sulfur and other pollutants.

During mid trip inspection, engine air filter was clean because in air intake picked up a piece of plastic bag covering over half of the filter. The cabin air filter was gunk up after 400 miles of mountainous terrain passing through coal mines and factories regions.

A better vehicle for this trip would be a hybrid or something with a turbo but the Fit held its own.
 
'18 HYUNDA Accent SE : 1.6 Ltr. (G.D.I.) w/ 6 speed auto : Driving Mix (Hwy/City ) : (60/40 ) . Avg. Speed : 45 . Avg. Temp : 72 . Fill of summer blend Top Tier (?) 93 w/E10 .

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NEW tank :

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Miles On Oil : P.U.P ( S.P.-GF-6A ) : 3 Qts. 5w-30 and 14 ounces 5w-20 w/ CARQUEST Premium 85334 .

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HAH, 522 miles on 9.2 gallons, so 56.7 mpg

A drop of around 5% under similar driving conditions from the last two tanks, probably due to extensive use of the AC over a period featuring mostly 90F+ days.
 
'18 HYUNDAI Accent SE : 1.6 Ltr. (G.D.I.) w/ 6 speed auto . Driving Mix ( Hwy/City ) : 65/35 . Avg. Temp : 62 . Avg. Speed : 42 . Fill of summer blend Top Tier 89 w/E10 . Difference of 3.81 M.P.G. for DISPLAY ( 43.4 ) and CALCULATED ( 39.59 ) . Tank was likely underfilled a bit .

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NEW tank :

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Miles On Oil :
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HAH, 446 miles on 8.7 gallons, so 51.3 mpg.
Pretty poor compared to the usual, but this tank involved 410 miles of straight highway along with the AC blasting merrily away most of the time, so not bad at all.
 
2022 Hyundai Accent. 357 miles, 8.595 gallons ($28.27) 41.5mpg. This tank started off with 200 miles of highway runs followed by a bunch of short trips. If i had filled up when i got back from the trip i would guess 45mpg would have been a realistic possibility.
 
2014 GLK250 4Matic: 548 miles driven, 14.3gal pumped in ($3.49/gal for $50 fill-up) equals 38.3mpg.

My commute is 197 miles to and from downtown Chicago.
 
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