How do I use a fuel economy comparison calculator?

Simply enter the combined MPG of two different vehicles, your estimated annual mileage, and the current gas price to see the cost difference side-by-side.

Is a fuel economy comparison calculator accurate for hybrids?

Yes, as long as you use the combined MPG rating. For plug-in hybrids (PHEVs), use the MPGe rating in the comparison field for the most accurate fuel economy comparison.

Fuel Economy Comparison Calculator

Q: How to compare fuel economy between two cars?

Enter the baseline vehicle's MPG and the comparison vehicle's MPG into our fuel economy comparison calculator. It will instantly show you the annual and monthly savings based on your driving habits.

Compare any two vehicles side-by-side. Our fuel economy comparison calculator helps you visualize the savings between different MPG ratings and decide which car is right for you.

Side-by-Side Fuel Comparison

Analyze fuel efficiency differences instantly

Vehicle A (Baseline) MPG

Vehicle B (Comparison) MPG

Annual Miles Driven

Gas Price ($/Gal)

Yearly Fuel Savings (B vs A)

$1,095

5-Year Savings

$5,475

Monthly Saving

$91

Fuel Comparison FAQ

Why use a fuel economy comparison calculator?

A fuel economy comparison calculator shows you the actual dollar difference between MPG ratings. Small jumps in MPG at the lower end (e.g., 15 to 20 MPG) save much more money than jumps at the higher end.

How to compare fuel economy between two cars?

Enter the "Combined MPG" for both the baseline vehicle (Vehicle A) and the new model (Vehicle B). Our fuel comparison tool instantly calculates the annual cost and savings difference based on your input.

Is this calculator accurate for hybrids and EVs?

Yes. Use the combined MPG for standard hybrids. For electric vehicles or plug-in hybrids in electric mode, use the MPGe rating in the comparison field for an accurate fuel economy comparison calculator result.

Does annual mileage affect the comparison results?

Absolutely. The more you drive, the more you save by choosing the vehicle with higher fuel economy. Using your specific mileage is key to getting an accurate assessment.