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Gas Trip Cost Calculator

Calculate fuel costs for any road trip based on distance, vehicle MPG, and gas prices. Plan your travel budget accurately.

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Understanding Fuel Costs

The average American drives approximately 13,500 miles per year (FHWA data), spending $2,000-$3,000 on fuel annually. At $3.25/gallon and 28 MPG, the fuel cost per mile is $0.116 — but the total cost of driving is $0.50-$0.75 per mile when you include depreciation, insurance, maintenance, and tires (AAA 2025 data). For road trips, fuel is typically 30-40% of total driving cost.

To reduce fuel costs: maintain proper tire pressure (improves MPG by 3%), remove excess weight, use cruise control on highways (5-10% improvement), and avoid aggressive acceleration. The difference between 25 and 30 MPG on a 500-mile trip: 20 vs 16.7 gallons, saving $10.75. Over a year of 13,500 miles, that difference is $160. Compare the full cost of owning your vehicle with our True Cost of Ownership Calculator.

People Also Ask

How much does it cost to drive 1,000 miles?
At 28 MPG and $3.25/gallon: $116. At 20 MPG and $3.50/gallon: $175. MPG matters more than gas price for long-distance cost.
Is it cheaper to drive or fly?
For solo travel over 300 miles: flying is often cheaper and faster. For families (3+ people): driving is usually cheaper. Factor in parking, tolls, and food stops for driving vs baggage fees and airport transport for flying.
How do I find the cheapest gas on a road trip?
Use GasBuddy or Google Maps to check prices ahead. Gas is typically cheapest at warehouse clubs (Costco, Sams) and near highway exits in rural areas. Avoid gas stations directly on interstate exits — they charge 10-30 cents more.