MPG & Mileage

Efficiency, odometer math and real-world MPG.

• How to Understand Your Real Fuel Economy

  EPA numbers are lab comparisons. Your log is the truth for your commute and climate.

• MPG vs L/100km: What's the Difference?

  MPG rewards higher numbers; L/100km rewards lower numbers — same physics, different scale.

• Why Is My Gas Mileage Getting Worse?

  Before you assume engine trouble, check how you measure MPG and what changed in your driving month.

• How to Calculate MPG

  MPG is miles driven divided by gallons used on a full-tank cycle. Here is the formula and how to avoid common mistakes.