Fuel Cost Comparison Calculator
Compare annual fuel costs between any two vehicles. See how much more (or less) you'll spend at the pump based on MPG differences, your driving habits, and current gas prices.
Driving Habits
Vehicle B saves $597/year
That's a difference of $50 per month at the pump between the two vehicles. Over time, small MPG differences add up to thousands of dollars.
Check the EPA Ratings
Every new car has an EPA-estimated MPG on the window sticker. Use the "combined" number for everyday driving — it blends city and highway.
Consider Total Cost of Ownership
A hybrid might cost $3,000 more upfront but save $1,500/year on fuel. It pays for itself in 2 years — and then keeps saving you money.
Drive Efficiently
Real-world MPG varies 10–15% with driving style. Gentle acceleration, steady speeds, and proper tire pressure can reclaim much of the difference.
Frequently Asked Questions
How do I calculate annual fuel cost?
Divide your annual miles driven by the vehicle's MPG to get annual gallons used, then multiply by the price per gallon. Example: 12,000 miles ÷ 25 MPG × $3.50 = $1,680 per year.
Is a higher-MPG car always cheaper?
Not necessarily. Higher-MPG vehicles (especially hybrids and EVs) often have higher sticker prices. You need to compare the upfront cost difference against fuel savings over how long you plan to own the vehicle.
What MPG should I use in the calculator?
Use the EPA combined MPG rating found on fueleconomy.gov or the window sticker. If you drive mostly highway, use the highway MPG; mostly city, use city MPG.
How accurate are these fuel cost estimates?
Estimates assume EPA-rated MPG and current gas prices. Real-world MPG varies with driving style, traffic, weather, and cargo. Actual costs are typically within 10–15% of estimates for most drivers.