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Gallon
US Customary![Play](https://cdn-wordup.com/WebsiteImages/DictionaryPics/BlackPlay.svg)
Remember, in the US, a gallon is smaller than in the UK, common in everyday use. ![Slide](https://word-images.cdn-wordup.com/tips/co80PdDK3ijP6kJ5XSmZMfddtw.webp)
Fuel Efficiency![Play](https://cdn-wordup.com/WebsiteImages/DictionaryPics/BlackPlay.svg)
Miles per gallon (mpg) measures how far a car can travel on a gallon of fuel, crucial in the US. ![Slide](https://word-images.cdn-wordup.com/tips/jpQmumDWeOaVNoR7epmJgbRu9GY.webp)
Volume vs. Weight![Play](https://cdn-wordup.com/WebsiteImages/DictionaryPics/BlackPlay.svg)
A gallon measures volume, not weight; different liquids can weigh differently. ![Slide](https://word-images.cdn-wordup.com/tips/rgNUvREzHJYcxvgLFJkaaavmvQM.webp)