How do I calculate gas mileage (MPG)?

MPG = Miles Driven ÷ Gallons Used. Fill up, drive until low, fill up again. Miles since last fill ÷ gallons to fill = your MPG.

What is good gas mileage for a car?

30+ MPG is considered good for a regular car. Compact cars achieve 35-40 MPG, hybrids 45-60 MPG, and EVs are rated in MPGe (miles per gallon equivalent).

How much does gas cost per mile?

At $3.50/gallon and 30 MPG: Cost per mile = $3.50÷30 = $0.117 or about 12 cents per mile. Calculate your actual cost using our fuel cost calculator.

How can I improve gas mileage?

Maintain proper tire pressure, avoid aggressive acceleration, use cruise control on highways, remove excess weight, and service your car regularly — all improve MPG by 5-15%.

Is it cheaper to buy gas in the morning?

Gasoline is slightly denser in cooler morning temperatures, meaning you get marginally more energy per gallon. The difference is minimal — under 1%.

⛽ Gas Mileage Calculator

Calculate MPG, Trip Fuel Cost & Annual Gas Expenses

Trip Distance (miles)

Car Fuel Efficiency (MPG)

Gas Price ($/gallon)

Number of Passengers

Trip Fuel Cost

Gallons Needed

Cost Per Mile

⛽ Average Gas Prices by State (2026)

California: ~$4.80/gal

New York: ~$3.70/gal

Texas: ~$3.00/gal

Florida: ~$3.20/gal

Illinois: ~$3.60/gal

Washington: ~$4.20/gal

National Avg: ~$3.40/gal

Georgia: ~$3.00/gal

Frequently Asked Questions

What is good MPG for a car in the USA?

Good MPG depends on vehicle type: Compact cars: 30-40 MPG. Sedans: 28-35 MPG. SUVs: 22-28 MPG. Trucks: 18-24 MPG. Hybrids: 45-55 MPG. EVs: equivalent to 100+ MPGe. The EPA's average new car fuel economy is around 29 MPG.

How can I improve my car's gas mileage?

Top tips: Keep tires inflated to recommended PSI (improves MPG by 3%). Use cruise control on highways. Avoid aggressive acceleration/braking. Remove unnecessary weight. Replace air filters. Drive 55-65 mph instead of 75+ mph (saves 15-20% fuel). Regular maintenance improves MPG significantly.