Understanding Gas Usage
Planning a trip or daily commute? Knowing how much gas you'll need helps you budget accurately and decide when to fill up. This calculator estimates fuel consumption based on your vehicle's MPG rating and the distance you plan to drive.
Your actual fuel consumption depends on driving conditions, speed, terrain, weather, and vehicle load. Highway driving typically yields better MPG than city driving due to less stop-and-go traffic.
Gas Usage Formula
Average Gas Consumption by Vehicle
| Vehicle Type | Avg MPG | Gas for 100 mi | Cost (100 mi @ $3.50) |
|---|---|---|---|
| Economy Car | 35 | 2.9 gal | $10.00 |
| Sedan | 28 | 3.6 gal | $12.50 |
| SUV | 22 | 4.5 gal | $15.91 |
| Truck | 18 | 5.6 gal | $19.44 |
| Minivan | 24 | 4.2 gal | $14.58 |
Frequently Asked Questions
How do I find my car's MPG?
Check the sticker on the driver's side door jamb, your owner's manual, or look up your vehicle at fueleconomy.gov. You can also calculate it by dividing miles driven by gallons used at your last fill-up.
Does highway or city driving use more gas?
City driving typically uses more gas due to frequent stops, acceleration, and idling. Highway driving at steady speeds is more fuel-efficient for most vehicles, though very high speeds (above 65 mph) reduce efficiency.
How does weather affect gas usage?
Cold weather can increase fuel consumption by 10-20% due to engine warm-up time, increased air resistance, and winter fuel blends. Hot weather with heavy AC use can reduce MPG by 5-15%.