Cost per 100 miles
At the US average gas price of $3.45/gal, driving 100 miles costs about $8.63 in a 40 MPG hybrid, $11.50 in a 30 MPG sedan, and $17.25 in a 20 MPG SUV.
Cost = (100 ÷ MPG) × gas price. Example for 32 MPG at $3.45/gal: (100 ÷ 32) × 3.45 = $10.78.
At 3.5 mi/kWh and $0.16/kWh, 100 EV miles cost about $4.57 on home electricity — less than half a 30 MPG gas car. On DC fast charging ($0.40/kWh) the cost rises to ~$11.43.
Use the Fuel Cost Calculator with your local gas price and exact MPG.
| MPG | $3.00/gal | $3.45/gal | $4.00/gal | $5.00/gal |
|---|---|---|---|---|
| 15 MPG | $20.00 | $23.00 | $26.67 | $33.33 |
| 20 MPG | $15.00 | $17.25 | $20.00 | $25.00 |
| 25 MPG | $12.00 | $13.80 | $16.00 | $20.00 |
| 30 MPG | $10.00 | $11.50 | $13.33 | $16.67 |
| 40 MPG | $7.50 | $8.63 | $10.00 | $12.50 |
| 50 MPG | $6.00 | $6.90 | $8.00 | $10.00 |
Cost to drive exactly 100 miles by MPG and gas price.
100 ÷ MPG. A 25 MPG car uses 4 gallons; a 50 MPG hybrid uses 2 gallons.
Yes, typically by 50–60% on home charging. About $4.50 vs $10–$17 in a gas car.
Yes — most cars peak in efficiency at 50–60 mph. Driving 80 mph instead of 65 mph drops MPG by ~15%.
