Which saves more gas: trading in a 16mpg car for a 20 or a 34mpg to a 50?

TT1127

New member
Also I was wondering why many other countries report fuel efficiency in gallons per mile (liters per kilometer) instead of miles per gallon (kilometers per liter). What are the advantages and disadvantages of reporting fuel efficiency in gallons per mile for a consumer interested in fuel economy?
 
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