Why measuring fuel efficiency in miles per gallon creates a mathematical illusion
The United States relies on miles per gallon to track fuel economy, but this metric creates confusing comparisons. By examining how distance per volume of fuel complicates simple calculations, this video explains why the rest of the world prefers measuring fuel consumption per distance traveled.
Most of the world measures fuel economy by volume per distance, such as gallons per 100 miles or liters per 100 kilometers. In contrast, the United States uses miles per gallon (mpg), which represents distance per volume of fuel. This choice creates a non-linear relationship that makes comparing vehicle efficiency counterintuitive.
The video demonstrates how the math behind mpg leads to complications that disappear when using the alternative approach. By shifting the perspective to fuel consumed over a set distance, the relationship between efficiency improvements and fuel savings becomes much clearer and more direct.
