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Fuel log graph
Efficiency log for: Yamaha C3 Scooter - 2007 yamaha C3 Scooter
  • Lifetime Fuel Economy: 112 mpg (US), 2.1 L/100 km, 134.5 mpg (Imp)
  • 90-day Fuel Economy: 113.7 mpg (US), 2.1 L/100 km, 136.5 mpg (Imp)
  • 3-tank Fuel Economy: 111.5 mpg (US), 2.1 L/100 km, 133.9 mpg (Imp)
  • EPA Combined Rating / % over rating: 115 mpg (US) / -1.2% (based on 90-day fuel economy)
  • Total fills: 12
  • Average cost per gal/L: $2.45 per gal (US); $0.00 per L (price data entered for 11 fill/s)
  • Average cost per fill: $2.48
  • Average distance cost: $0.02 per mi. / $0.01 per km
  • Total fuel used: 12.26 gal (US), 46.4 L
  • Total distance traveled: 1372.6 mi. / 2209 km
  • Total cost: $27.32
  • Total fuel saved vs. EPA: -0.3 gal. (US) / -1.1 L
  • Total saved: $-0.74 (based on avg. cost per gal./L)
  • Average tank distance: 114.4 mi. / 184.1 km
Fill date Distance Fill amount Price Fuel Economy Details
2009-08-15 107.5 mi
173 km
0.935 gal (US)
0.78 gal (Imp)
3.54 L
31.51 kWh
($2.33 total for this fill)
114.97 mpg (US)
137.82 mpg (Imp)
2.05 L/100 km
0.87 gal (US)/100 mi
293.12 Wh/mi
Filled up with Petro 93 oct gas... @3486.30 miles... (The tank I just used was the last of the 89 oct gas in this test.) Too far to comfortably go to get Texaco... This stuff's pretty good! It's Marathon Gas.114.97 mpg.... like I told you.The higher gearing and a hundred miles did the job. It should be even better next time. I've now got a relaxed cruise that naintains 43-46mph in the gently rolling hills out in the country around here.Pretty good for a tiny piston pulling my 240 lbs around! lol! I'll be strapping on the tent, sleeping bag, and saddlebags before too long (when it cools off!) and see how she does rigged out.
2009-07-30 120.5 mi
193.93 km
1.104 gal (US)
0.92 gal (Imp)
4.18 L
37.2 kWh
($2.75 total for this fill)
109.15 mpg (US)
130.98 mpg (Imp)
2.16 L/100 km
0.92 gal (US)/100 mi
308.71 Wh/mi
Texaco 89 oct gasoline 110.96 mpg at 3258.30 miles. At 3000 miles I replaced the Dr.Pulley 3.5gr sliding weights in the transmission with a new set of their 4.0gr sliding weights. I expect that the lower mpg is the result of the new weights not being "Broken in" yet.... I expect 115mpg ( and even more!) to return with some miles....
2009-07-23 122.5 mi
197.14 km
1.104 gal (US)
0.92 gal (Imp)
4.18 L
37.2 kWh
($2.75 total for this fill)
110.96 mpg (US)
133.15 mpg (Imp)
2.12 L/100 km
0.9 gal (US)/100 mi
303.67 Wh/mi
(1st tank of Texaco 89 oct @3135.8 miles) When I got 2500 miles on my scooter I decided to go back and recheck the local Brands/Grades of gasoline to see what my "nearly broken in engine" had to say about what it likes best. Based on this first tank of Texaco 89 oct midgrade and the lower fuel economy (110.96 mpg) it appears that their regular gasoline works best for my scooter. I didn't notice any difference in performance one way or the other,It just cost ten cents more to fill my tank.I'll put another 500 miles of 89 oct through my scooter and we'll find out. Gabe
2009-07-16 117.1 mi
188.45 km
1.01 gal (US)
0.84 gal (Imp)
3.82 L
34.04 kWh
($2.41 total for this fill)
115.94 mpg (US)
139.4 mpg (Imp)
2.03 L/100 km
0.86 gal (US)/100 mi
290.69 Wh/mi
115.95 mpg... Back to my beloved Texaco again! The fuel mileage tells the difference!This particular station was bought awhile back by the local Texaco Jobber who replaced everything from the ground tanks up. I hate to think what all was in the bottom of those old tanks! Whew! I'd well imagine that a microbiologist would have a ball studying it. Now the fuel is clean and fresh and I can tell the difference with my wee fuel injected scooter!
2009-07-13 121 mi
194.73 km
1.085 gal (US)
0.9 gal (Imp)
4.11 L
36.56 kWh
($2.81 total for this fill)
111.52 mpg (US)
134.44 mpg (Imp)
2.11 L/100 km
0.9 gal (US)/100 mi
302.15 Wh/mi
I ended up out of pocket again and had to use "Mom & Pop," Country Store gasoline! 87 oct Regular. 111.52 mpg....
2009-06-24 109.9 mi
176.87 km
0.905 gal (US)
0.75 gal (Imp)
3.43 L
30.5 kWh
($2.12 total for this fill)
121.44 mpg (US)
146.53 mpg (Imp)
1.94 L/100 km
0.82 gal (US)/100 mi
277.53 Wh/mi
121.436 mpg! On BP 87 oct. regular. Of late my scooter has been running better and more smoothly every time I ride it. The Dr.Pulley variator just Turned 1500 miles today and it's shifting so smoothly that were it not for the tuned exhaust system I wouldn't be able to tell it was working.... I'll have to try another tank of BP gasoline! I'm in the early stages of planning a 1200 mile trip next spring (from S.E. Alabama where I live to Indianapolis, In and back , mostly following U.S. Hwy 31.... Be careful out there! Gabe
2009-06-23 96.3 mi
154.98 km
0.835 gal (US)
0.7 gal (Imp)
3.16 L
28.14 kWh
($2 total for this fill)
115.33 mpg (US)
137.57 mpg (Imp)
2.04 L/100 km
0.87 gal (US)/100 mi
292.21 Wh/mi
115.329 mpg. Texaco 87 oct regular gasoline....I checked my tire pressures and both were low 21 in front , inflated back to 30 psi, and 28 in the big tire out back, inflated back to 34 psi. You have to stay on top of this with a scooter as the tires aren't that big.
2009-06-18 126 mi
202.78 km
1.12 gal (US)
0.93 gal (Imp)
4.24 L
37.74 kWh
112.5 mpg (US)
135.48 mpg (Imp)
2.09 L/100 km
0.89 gal (US)/100 mi
299.52 Wh/mi
2009-06-18 126 mi
202.78 km
1.12 gal (US)
0.93 gal (Imp)
4.24 L
37.74 kWh
($2.68 total for this fill)
112.5 mpg (US)
135.48 mpg (Imp)
2.09 L/100 km
0.89 gal (US)/100 mi
299.52 Wh/mi
112.50 mpg. Had to refuel at a "Mom & Pop" country store instead of at my beloved Texaco station, with their new from the tanks up fuel system! No telling what was in that gasoline! But, it sure beats pushing my scooter several (13) miles!! The reduced fuel economy tells the story....
2009-05-30 117 mi
188.29 km
1.02 gal (US)
0.85 gal (Imp)
3.86 L
34.37 kWh
($2.44 total for this fill)
114.71 mpg (US)
137.65 mpg (Imp)
2.05 L/100 km
0.87 gal (US)/100 mi
293.76 Wh/mi
114.902 mpg. I installed the first aftermarket exhaust system made specifically for the Yamaha C3/vox/Giggle Scooter on the 14th of april. This is the first tank of regular 87 oct gas I've used in a while to see how well it will work. My ECU was a bit unhappy for the first 100 miles until it adjusted to the added airflow... It went to as far rich as it could when I first started my engine after installing the new exhaust. It's marketed by <> and with the way it looks, sounds, and the power it's added across the rpm range, It's made my scooter a real hoot to ride!
2009-04-11 120.1 mi
193.28 km
1.079 gal (US)
0.9 gal (Imp)
4.08 L
36.36 kWh
($2.69 total for this fill)
111.31 mpg (US)
133.44 mpg (Imp)
2.11 L/100 km
0.9 gal (US)/100 mi
302.75 Wh/mi
111.306 mpg. Early April down here in Lower SE Alabama and Wind!! I was on my way to my Yamaha Dealer this am to have my 2000 mile service done. It's a nice 45 mile ride through the back country. My scooter was struggling into the wind like my old Chevy did when I was a youngun. And, That old car had.... 3.08 gears in the rear end.... Hmmmm! I got to the Dealer and handed him my lubes, (I'd decided to switch to Amsoil full synthetic 10w40 4T oil and "Severe service" 75w110 gear lube.) They had a set of Bridgestone tires that would fit my C3, a 120/90-10 for the front, and a 130/90-10 (a size smaller than the tire I'd had on it.) for the rear. On the way home there's pulling power! and it's smooootthhh! What I'd done, was gear my scoot up out of it's power band. It worked ok until the windy season began.... The Synthetic lubes are worth the money they cost..... as my fuel mileage shows. I'll keep experimenting, My thought process has been,"Gee, I wonder what'll happen if I do this?" lol! Later, Gabe
2009-04-10 88.7 mi
142.75 km
0.941 gal (US)
0.78 gal (Imp)
3.56 L
31.71 kWh
($2.34 total for this fill)
94.26 mpg (US)
113.72 mpg (Imp)
2.49 L/100 km
1.06 gal (US)/100 mi
357.5 Wh/mi
94.261mpg. I've been experimenting with a taller rear tire for more top speed and fuel mileage....I'd replaced the stock rear tire, a 120/90-10, with a
140/90-10 my scooter is doing well with the mod, a bit slow to come up to speed, but a bit faster and holding that speed in the hills fairly well.

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