The Formula
Fuel Consumption (liters/hour) = Engine Power (kW) Ă— Specific Fuel Consumption (g/kWh) Ă— Load Factor Ă· Diesel Density (g/liter)
Best Fuel Consumption & Cost Calculator
Estimate fuel burn and trip costs for vehicles, trucks, or heavy machinery.
💡 Pro Tip: High fuel costs? Clogged injectors reduce MPG. Learn how to restore efficiency →
How to reduce fuel cost and improve mileage?
If you want to improve your vehicle mileage, there are many fuel additives to stabilise combustion and minimise the fuel cost. Also, fuel injector cleaner reduces the cost and improves the efficiency.
Estimated Fuel Consumption Reference Chart
Average fuel burn rates (Diesel/Petrol) based on standard operating conditions.
| Vehicle / Machine Class | Avg. Burn (Ltrs/Hr) | Load Intensity |
|---|---|---|
| Economy Sedan / Hatchback | 1.2 – 1.8 | Light |
| SUV / Luxury Sedan | 2.0 – 3.0 | Medium |
| Light Commercial (LCV) | 4.5 – 6.0 | Medium |
| 20-Ton Excavator | 12 – 18 | Standard |
| Piling Rig (Heavy Duty) | 25 – 35 | High Torque |
| 100-Ton Crawler Crane | 10 – 15 | Intermittent |
| Hydra / Pick & Carry Crane | 4 – 7 | Light/Standard |
Fuel Efficiency & Estimation FAQ
Q: How do you accurately compute hourly fuel consumption?
Ans: The most accurate method is the “Full Tank Method.” Fill the tank to the brim, operate for exactly 5 hours, and then refill. Divide the refill liters by 5. Our calculator above automates this data for precise project planning.
Q: Does a higher RPM always mean higher fuel consumption?
Ans: Yes, but Tier-4 engines feature a “Sweet Spot” (Eco Mode). Operating consistently above this range can increase operational costs by 20% or more without improving productivity.
