How is it much more fuel efficient to travel at say 50 mph for longer than 70 mph for a shorter period of time. Like if I was going a set distance, if I drive slower I’m using the car longer so why isn’t it the same fuel being used.
In: 15
you have to keep in mind that we usually measure in “miles per gallon”. This unit does not have anything to do with time. It’s about distance (miles) and fuel consumed (gallons). going fast or slow doesn’t have a direct effect on this measurement.
What others have said about the wind resistance and different efficiency ranges is true. It’s a combination of what RPM range your engine is most efficient in, gear ratios on your transmission, and the wind resistance.
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