Fuel Cost Calculator
Fuel is one of the largest ongoing vehicle expenses. This calculator estimates annual and monthly fuel costs based on your driving habits and fuel economy, and lets you compare two vehicles side by side to see long-term savings from a more fuel-efficient option.
Compare Fuel Costs
Estimates assume consistent fuel prices and driving patterns. Actual fuel economy varies with driving conditions, vehicle maintenance, tire pressure, and driving habits. City driving typically yields 15–30% lower MPG than highway driving. EPA estimates are a starting point; real-world results vary.
Average Fuel Economy by Vehicle Type
| Vehicle Type | Combined MPG (avg) | Annual Fuel Cost* |
|---|---|---|
| Compact Sedan (Civic, Corolla) | 32–38 MPG | $1,000–$1,200 |
| Midsize Sedan (Camry, Accord) | 28–34 MPG | $1,150–$1,400 |
| Compact SUV (RAV4, CR-V) | 27–33 MPG | $1,200–$1,450 |
| Full-Size SUV (Tahoe, Expedition) | 16–22 MPG | $1,800–$2,450 |
| Pickup Truck (F-150, Silverado) | 18–24 MPG | $1,600–$2,150 |
| Hybrid Sedan (Prius, Accord Hybrid) | 45–57 MPG | $680–$870 |
| Plug-in Hybrid (RAV4 Prime) | 38–94 MPGe | $450–$800 |
*Based on 12,000 miles/year at $3.25/gallon
Tips to Improve Fuel Economy
- Tire pressure — Under-inflated tires increase rolling resistance and can reduce MPG by 2–3%
- Steady speeds — Aggressive acceleration and braking can lower fuel economy by 15–30% on highways
- Reduce idle time — Idling uses 0.25–0.50 gallons per hour; shut off the engine if stopped for more than 60 seconds
- Regular maintenance — Dirty air filters, worn spark plugs, and old motor oil all reduce efficiency
- Remove excess weight — Every 100 lbs of extra weight reduces MPG by approximately 1–2%
- Aerodynamics — Roof racks and cargo boxes can reduce highway MPG by 5–25%
Frequently Asked Questions
How accurate are EPA fuel economy ratings?
EPA ratings are based on standardized lab tests and serve as a fair comparison between vehicles. However, real-world fuel economy can differ by 10–20% depending on driving style, terrain, climate, and vehicle condition. The EPA city rating reflects stop-and-go driving; highway rating reflects steady-speed cruising at 48 MPH average.
Is premium fuel worth the extra cost?
Use the grade recommended in your owner's manual. Vehicles that "require" premium have high-compression engines that can knock on regular fuel, potentially causing damage. Vehicles that "recommend" premium will run safely on regular but may lose 1–3% in power and efficiency. If your car is designed for regular, premium provides zero benefit.
How much do hybrids actually save?
A hybrid averaging 50 MPG vs a conventional car at 28 MPG saves about $650–$800 per year at current fuel prices (12,000 miles/year). Over 5 years, that totals $3,250–$4,000 in fuel savings, which often offsets the higher purchase price. Hybrids save the most in city driving where regenerative braking recaptures energy.