Take the Audi A1 with a 1.4 liter TFSI engine for example. In l/100km, the A1's fuel efficiency is 4.8l/100km. Divide 282.5 by 4.8 to get its MPG, 58.9, as Carwow points out. You can also do these calculations on a number of websites online so you don't need to run the num...