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 measure off the unit which is constant, meaning the distance not the time. If you were measuring off the time you would be using more fuel per minute.
If you travel 100 miles at 50mph it would take you 120 minutes. You would maybe do that journey at 50miles per gallon or 60 minutes per gallon.
If you were to travel at 100 miles at 100mph, just for the ease of maths and understanding, you would complete the journey in 60 minutes. You would probably complete that journey at 20miles per gallon or 12 minutes per gallon.
You have done the journey in half the time but you have used 250% the amount of fuel for the same journey.
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