CalculynHow it works
Miles per gallon is distance divided by fuel used. For metric, 235.21 ÷ MPG gives liters per 100 km.
Formula
MPG = miles ÷ gallons L/100km = 235.215 ÷ MPG
Example
320 miles on 11.2 gallons = 28.6 MPG (8.23 L/100 km).
Assumptions & limitations
- Real fuel economy varies with speed, load, weather and driving style.
Frequently asked questions
Why is my real MPG lower than the sticker?
Speed, AC use, short trips, tire pressure and cargo all reduce real-world fuel economy.