Compare Fuel Consumption Calculator
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Reviewed by Calculator Editorial Team
Compare fuel consumption between vehicles using miles per gallon (mpg), kilometers per liter (kpl), or liters per 100 kilometers (l/100km). This calculator helps you analyze vehicle efficiency and make informed decisions when choosing between different cars or fuel types.
How to Use This Calculator
To compare fuel consumption between vehicles:
- Enter the distance traveled for each vehicle in the same units (miles or kilometers).
- Enter the fuel consumed for each vehicle in the same units (gallons or liters).
- Select the appropriate units for your region (US gallons or metric liters).
- Click "Calculate" to see the comparison results.
The calculator will display the fuel efficiency for each vehicle and highlight which one is more efficient.
Formula Explained
The fuel consumption is calculated using the following formulas:
Miles per gallon (mpg)
mpg = Distance (miles) ÷ Fuel (gallons)
Kilometers per liter (kpl)
kpl = Distance (km) ÷ Fuel (liters)
Liters per 100 kilometers (l/100km)
l/100km = (Fuel (liters) ÷ Distance (km)) × 100
These formulas allow you to compare fuel efficiency across different unit systems and vehicle types.
Worked Example
Let's compare two vehicles:
- Vehicle A: 300 miles traveled, 12 gallons of fuel used
- Vehicle B: 480 km traveled, 36 liters of fuel used
Vehicle A (mpg)
mpg = 300 miles ÷ 12 gallons = 25 mpg
Vehicle B (l/100km)
l/100km = (36 liters ÷ 480 km) × 100 = 7.5 l/100km
In this example, Vehicle A is more fuel-efficient than Vehicle B.
Vehicle Comparison Table
Use this table to compare fuel efficiency between different vehicles:
| Vehicle | Distance | Fuel Used | Efficiency |
|---|---|---|---|
| Sedan | 300 miles | 12 gallons | 25 mpg |
| SUV | 300 miles | 15 gallons | 20 mpg |
| Hybrid | 300 miles | 8 gallons | 37.5 mpg |
This table shows that the hybrid vehicle is the most fuel-efficient among the three options.
Frequently Asked Questions
What units should I use for fuel consumption?
Use miles per gallon (mpg) for US vehicles and kilometers per liter (kpl) or liters per 100 kilometers (l/100km) for metric vehicles. The calculator converts between these units automatically.
How accurate is this calculator?
This calculator provides an estimate based on the inputs you provide. For precise measurements, consult your vehicle's owner's manual or use a fuel consumption meter.
Can I compare vehicles with different fuel types?
Yes, you can compare vehicles with different fuel types (gasoline, diesel, electric) by entering the appropriate distance and fuel consumption values.