Real-World MPG Calculator Calculator
Estimates only. Results from this calculator are approximate and should not be used as financial advice. Actual figures may vary.See our methodology and data sources.
Frequently Asked Questions
Why is my real-world MPG different from EPA ratings?
Real-world MPG is typically 10-20% lower than EPA ratings due to: actual driving conditions (traffic, weather, terrain), driving habits (speed, acceleration), vehicle load, air conditioning use, and maintenance condition. EPA ratings are laboratory-tested under ideal conditions.
How can I improve my real-world MPG?
Improve MPG by: driving at steady speeds (55-65 mph optimal), avoiding aggressive acceleration/braking, reducing vehicle load, maintaining proper tire pressure, using cruise control on highways, reducing air conditioning use, and keeping up with maintenance (oil changes, air filters).
Should I trust EPA MPG ratings when buying a car?
EPA ratings are a useful comparison tool but expect 10-20% lower real-world MPG. EPA ratings help compare vehicles, but actual MPG depends heavily on your driving conditions and habits. Use them as a guide, not an absolute guarantee.
How often should I calculate my real-world MPG?
Calculate MPG regularly (monthly or every few tanks) to track changes and identify issues. A significant MPG drop may indicate maintenance problems. Track over multiple tanks for accuracy, as single-tank calculations can vary with driving conditions.
