Question 1

How do I calculate MPG?

Accepted Answer

MPG (miles per gallon) is calculated by dividing the miles driven by the gallons of fuel used. For example, if you drove 300 miles and used 12 gallons, your MPG is 300 / 12 = 25 mpg.

Question 2

What is the difference between US MPG and Imperial MPG?

Accepted Answer

US MPG uses the US liquid gallon (3.785 liters), while Imperial MPG uses the Imperial gallon (4.546 liters). The same fuel efficiency gives a higher number in Imperial MPG because the Imperial gallon is larger.

Question 3

How do I convert MPG to L/100km?

Accepted Answer

To convert US MPG to L/100km, use the formula: L/100km = 235.215 / MPG. For example, 30 US MPG equals about 7.84 L/100km. This tool converts automatically.

Question 4

What is a good MPG?

Accepted Answer

For gasoline cars, 25-30 US MPG is average, 30+ is good, and 40+ is excellent. Hybrids typically achieve 45-58 MPG, while efficient diesels can reach 35-45 MPG.