Trip Fuel Costs

Overall, my trip to Colorado and the Black Hills (including all my scenic jaunts) was 3002.9 miles with fuel cost of $309.04.

My trip computer reports an average mileage of 44MPG -- but this doesn't add up; it suggests that the average fuel cost would have to have been 4.529 / gallon.

Clearly, I saw some of the least expensive gas prices I've seen. I would set my average trip gas price something like 4.05 - 4.20 per gallon (as low as 3.78; as high as 4.39, and most around 4.10).

If I guess the average cost:

$/gal	MPG
3.999	38.85774
4.049	39.34359
4.099	39.82943
4.149	40.31527
4.199	40.80112

That is, my real trip mileage is more likely somewhere between 39 and 41 miles per gallon.

It looks like my K1200LT trip computer is off by ~8%. This makes some sense, as I note the speedometer (at highway speeds) shows something approaching 10% higher speed than my GPS reports (I refer to my GPS speedometer when riding). This also suggests that my miles are about 8% less than shown on the odometer.