Miles Per Gallon Calculator

30 MPG

30 MPG Calculator

The 30 miles per gallon calculator shows the running cost of a vehicle that returns 30 MPG — a figure the EPA considers good fuel economy. It's typical of modern compact and midsize cars like the Toyota Corolla, Honda Civic, and Mazda3. With the MPG fixed at 30, you only need a trip distance and a gas price to see the cost.

Enter the miles you plan to drive and the price per gallon, and the calculator returns total fuel cost, gallons needed, cost per mile, and an annual estimate. At 30 MPG you sit above the US average of around 26–28 MPG, so your per-mile fuel cost is lower than most — a 30 MPG car uses exactly one-third less fuel than a 20 MPG one over the same distance.

Below the calculator are examples of vehicles that average 30 MPG plus a full cost table across common distances and gas prices. Compare with our 25 MPG calculator, and use the MPG Comparison and MPG Cost tools to model your own scenarios.

30 MPG

What Gets 30 MPG?

  • Toyota Corolla
  • Honda Civic
  • Mazda3 and Ford Focus
  • Most modern compact sedans and hatches

30 MPG is considered "good" fuel economy.

30 MPG Cost Table

Gas Price10 miles100 miles500 miles15,000 mi/yr
$3.00 $1.00 $10.00 $50.00 $1500.00
$3.50 $1.17 $11.67 $58.33 $1750.00
$4.00 $1.33 $13.33 $66.67 $2000.00
$4.50 $1.50 $15.00 $75.00 $2250.00
$5.00 $1.67 $16.67 $83.33 $2500.00

How to Use

  1. The MPG is fixed at 30 for this calculator.
  2. Enter the miles to drive.
  3. Enter the gas price per gallon.
  4. Click Calculate Fuel Cost (or press Enter).
  5. Review total cost, gallons needed, cost per mile, and annual cost.

Related tools: MPG Calculator, 25 MPG Calculator, MPG Comparison Calculator, MPG Cost Calculator.

Got Questions?

30 MPG Calculator FAQ

Many compact and midsize cars achieve around 30 MPG combined: Toyota Corolla (32), Honda Civic (33), Mazda3 (31), Volkswagen Jetta (34), and Subaru Impreza (29–32). Modern compact cars commonly hit or exceed this figure.

At $3.50/gallon: $0.117 per mile. At $4.00/gallon: $0.133 per mile.

At 15,000 miles/year and $3.50/gallon: $1,750/year. At $4.00/gallon: $2,000/year. A significant saving over lower-MPG vehicles.

Yes. The EPA considers 30+ MPG combined to be good fuel economy. It places you above the national average of ~26–28 MPG, meaning lower-than-average fuel costs.

At 15,000 miles/year and $3.50/gallon: $875/year saved. Over 5 years: $4,375. 30 MPG uses exactly one-third less fuel than 20 MPG for the same distance.