We present the results of a statistical analysis on the fuel-consumption characteristics of 115 automobiles. The factors considered are vehicle weight, engine size, cumulative mileage, vehicle age, vehicle maintenance, make of vehicle, fuel brand, travel speed, trip length, travel time per trip,...

We have studied the fuel-consumption characteristics of 387 buses under actual operating conditions over a 12-month period. We have examined the variations in monthly fuel efficiency among service routes, bus models, and months of the year, as well as the effects of engine overhaul, weather...