Calculate your vehicle's fuel economy and compare efficiency.
To calculate fuel economy:
The calculator returns your fuel economy in km/L, L/100km, and MPG so you can compare with manufacturer specs or track changes over time.
Fuel economy conversions:
km/L = distance (km) ÷ fuel (L)L/100km = (fuel (L) ÷ distance (km)) × 100MPG = distance (miles) ÷ fuel (gallons)Cross-unit: MPG ≈ 235.215 ÷ L/100km
Example: You drive 500 km and use 40 liters of fuel.
500 ÷ 40 = 12.5 km/L(40 ÷ 500) × 100 = 8.0 L/100km235.215 ÷ 8.0 ≈ 29.4 MPGFor a gasoline car, under 7 L/100km (over 34 MPG) is considered good. Hybrids typically achieve 4–5 L/100km (47–59 MPG). SUVs and trucks average 10–14 L/100km.
Speed, tire pressure, driving style (hard acceleration and braking), vehicle weight, and air conditioning use have the biggest impact. Highway driving at a steady speed is generally more efficient than city driving.
Manufacturer ratings are measured under controlled lab conditions. Real-world factors like traffic, terrain, weather, cargo weight, and driving habits can easily cause a 10–20% difference.