Canada uses the British
Canada uses the British Imperial Gallon (4.5 liters) whereas the US uses the US Gallon (3.8 liters). So the Canadian gallon is about 18% larger which accounts for the 18% increase in fuel economy.
Canada uses the British Imperial Gallon (4.5 liters) whereas the US uses the US Gallon (3.8 liters). So the Canadian gallon is about 18% larger which accounts for the 18% increase in fuel economy.