What is 9.1 liters per 100 kilometers in miles per gallon?

Answer 1

9.1 litre/100 km ≈ 31.04 mpg

1.609 km ≈ 1 mile

4.5461 litres ≈ 1 gallon

⇒ y litre / 100 km ≈ (y ÷ 4.5461 gallons) / (100 ÷ 1.609 miles)

= y x (1.609 ÷ 454.61) gallon / mile

≈ y ÷ 282.4811 gallon / mile

As miles / gallon is required instead of gallons / mile, need to take the reciprocal of this, to give:

y litre/100 km ≈ 1 /(y ÷ 282.4811) mpg

≈ 282.4811 ÷ y mpg

Thus to convert litre/100km to mpg divide it into approx 282.4811

So for 9.1 l/100 km this becomes:

9.1 l/100km ≈ 282.4811 ÷ 9.1 mpg

≈ 31.04 mpg