- Mar 18, 2004
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Typically, a car gets the best fuel economy somewhere in the 50-60 mph range. So let's say the optimal speed for fuel efficiency is 60 mph.
For a 75 mph trip, is it more fuel efficient to average 60 mph and get there in an hour and 15 minutes or average 75 mph and get there in an hour?
For a 75 mph trip, is it more fuel efficient to average 60 mph and get there in an hour and 15 minutes or average 75 mph and get there in an hour?