Gas Mileage Calculator
Professional fuel economy tracker. Calculate MPG or L/100km, analyze cost-per-mile, and benchmark against vehicle standards. Features trip estimation and fleet logging.
🗺️ Trip Cost Predictor
📅 Session Log
| Date | Dist | Fuel | Eff. | Cost |
|---|---|---|---|---|
| No data yet. Calculate to add entry. | ||||
About
Precise fuel economy tracking is the definitive metric for vehicle health and financial planning. While dashboard computers provide estimates based on airflow and injector pulse width, they often drift by 5% to 12% due to tire pressure variance, fuel composition changes, and sensor aging. This tool utilizes the Tank-to-Tank method, the industry standard for determining actual consumption.
By monitoring the delta between Odometer readings and physical Fuel volume, you gain two advantages. First, financial clarity: understanding your exact Cost per Mile allows for accurate budgeting and reimbursement. Second, mechanical diagnostics: a sudden, unexplained drop in MPG or rise in L/100km is often the first symptom of dragging brakes, failing oxygen sensors, or transmission slip - long before a Check Engine light appears.
This application features a comprehensive database of vehicle benchmarks, allowing you to compare your efficiency against real-world averages for your specific chassis type. It supports global unit conversions (US, Imperial, Metric) and provides predictive analytics for future travel expenses.
Formulas
The calculator employs the discrete logic of measuring distance traveled against volume replenished. This requires a full tank reset for maximum precision.
1. Standard Efficiency (MPG):
2. Metric Efficiency (L/100km):
3. Financial Impact (Cost per Unit):
4. Range Projection:
Reference Data
| Vehicle Category | City MPG | Hwy MPG | Comb L/100km | Est. Tank gal |
|---|---|---|---|---|
| Economy / Compact | 30 - 35 | 40 - 45 | 6.4 | 11 - 13 |
| Standard Sedan (4-cyl) | 25 - 29 | 34 - 38 | 7.6 | 13 - 16 |
| Luxury Sedan (V6/Turbo) | 19 - 24 | 28 - 32 | 9.8 | 16 - 19 |
| Compact SUV / Crossover | 23 - 27 | 29 - 33 | 8.4 | 14 - 16 |
| Midsize SUV (AWD) | 18 - 22 | 24 - 28 | 10.7 | 18 - 21 |
| Full-Size SUV (V8) | 14 - 17 | 19 - 23 | 13.8 | 24 - 28 |
| Pickup Truck (1/2 Ton) | 15 - 19 | 20 - 25 | 12.4 | 23 - 36 |
| Heavy Duty Truck (Diesel) | 12 - 15 | 16 - 20 | 15.7 | 30 - 38 |
| Hybrid Sedan | 50 - 58 | 48 - 55 | 4.4 | 10 - 12 |
| Sports Car / Coupe | 15 - 20 | 24 - 29 | 10.2 | 15 - 18 |
| Motorcycle (600cc+) | 35 - 45 | 45 - 55 | 5.2 | 3 - 5 |
| Van / Minivan | 19 - 22 | 26 - 29 | 9.4 | 19 - 21 |
| Electric (MPGe) | 110+ | 95+ | 2.0 (eq) | N/A |