5/8/2021 · The 90.5 net ton-miles per gallon is 41.4 percent higher than the 64 net ton-mile estimate from a 1977 study of 25-ton trucks with 50 percent loaded miles. The 1983 fuel consumption of the seven trucks taken from company records was 82.4 net ton-miles per gallon at 67.5 percent loaded miles and 68.6 net ton-miles per gallon at 50 percent loaded miles.