Calculate your car's MPG, trip fuel costs, and compare vehicles. At $4.10/gallon (June 2026 US average), a 50 MPG car costs $984/year to fuel while a 20 MPG truck costs $2,460/year. Enter your numbers below to see your exact costs.
Enter your odometer readings and fuel amount to calculate your vehicle's fuel efficiency.
Plan your road trip and calculate total fuel costs.
Compare fuel efficiency between two vehicles.
Calculate how much you could save by improving your fuel efficiency.
As of June 2026, the US national average for regular unleaded is about $4.10/gallon. But the price varies by over $2.50/gallon between states. Here's what that means for your annual fuel cost.
Using EPA combined MPG ratings for 2026 models, here's what popular vehicles actually cost to fuel for a year:
| Vehicle | EPA MPG | Gallons/yr | Annual Cost | Monthly |
|---|---|---|---|---|
| Toyota Camry Hybrid | 52 | 231 | $947 | $79 |
| Honda Accord Hybrid | 48 | 250 | $1,025 | $85 |
| Toyota Corolla | 35 | 343 | $1,406 | $117 |
| Honda Civic | 33 | 364 | $1,492 | $124 |
| Ford F-150 (V6) | 23 | 522 | $2,140 | $178 |
| Jeep Wrangler | 20 | 600 | $2,460 | $205 |
| Ford F-150 (V8) | 18 | 667 | $2,735 | $228 |
Source: EPA fueleconomy.gov 2026 model year ratings. Annual cost = (12,000 ÷ MPG) × $4.10/gallon. Your actual cost depends on your driving conditions, which the calculator above accounts for.
The calculation is simple division, but getting it right requires consistent fill-ups and accurate odometer readings.
MPG = Distance Traveled ÷ Fuel Consumed
For metric: L/100km = (Fuel in liters × 100) ÷ Distance in km
Here's the exact calculation the calculator above runs, using a typical fill-up:
This 50 MPG result matches a Toyota Camry Hybrid — one of the most efficient non-EV vehicles on the market in 2026.
Fill your tank completely and note the odometer reading. Drive until your next fill-up. Fill up again and note the new odometer reading and the gallons you just added. MPG = (new odometer - old odometer) ÷ gallons added. For example: (52,860 - 52,300) ÷ 11.2 = 50 MPG.
In 2026, a combined MPG of 30+ is good for a gas car, 45+ is excellent (hybrid territory), and 52 is among the best (Toyota Camry Hybrid). For trucks, 20-25 MPG combined is typical. The EPA average for all new vehicles is about 28 MPG combined.
The calculator is as accurate as your inputs. If you enter correct odometer readings and the exact gallons to refill, the MPG result is mathematically precise. However, a single fill-up can vary 3-5 MPG due to driving conditions. Average 3-5 fill-ups for a reliable figure.
Use the formula: L/100km = 235.215 ÷ MPG. For example, 30 MPG = 235.215 ÷ 30 = 7.84 L/100km. The conversion constant 235.215 comes from the relationship between miles, kilometers, gallons, and liters. See our MPG vs L/100km conversion guide for the full explanation.
EPA ratings are lab-tested under controlled conditions. Real-world MPG is typically 10-15% lower due to: aggressive driving, heavy traffic, cold weather (winter blend fuel and engine warmup), air conditioning use, and cargo weight. If your MPG is 20%+ below the EPA rating, check your tire pressure, air filter, and oxygen sensor.
Reviewed June 2026. Gas prices sourced from AAA's daily fuel gauge report (June 2026). EPA MPG ratings from fueleconomy.gov for 2026 model year vehicles. The calculator runs entirely in your browser — no data is sent to any server. If you spot an outdated price or incorrect MPG figure, please contact us with the correct data and your source.