Phil Robson
Well-Known Member
So as not to hijack the other threads on related subjects, my query is regarding speed & consumption.
Supposing you have a car that does 50mpg at 50mph. It would seem reasonable that if the same car does 25mpg at 100mph, then driving faster will not use any more fuel because the journey is over quicker.
However, this isn't the case:
Drive for 2 hours at 50mph - distance covered = 100 miles, fuel consumed = 2 gals.
Drive for 1 hour at 100mph - distance covered = 100 miles, fuel consumed = 4 gals.
Time must somehow be taken care of in the mpg calculation, but I don't see how :?
Supposing you have a car that does 50mpg at 50mph. It would seem reasonable that if the same car does 25mpg at 100mph, then driving faster will not use any more fuel because the journey is over quicker.
However, this isn't the case:
Drive for 2 hours at 50mph - distance covered = 100 miles, fuel consumed = 2 gals.
Drive for 1 hour at 100mph - distance covered = 100 miles, fuel consumed = 4 gals.
Time must somehow be taken care of in the mpg calculation, but I don't see how :?