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Fuel Consumption Converter

Convert between various units of fuel consumption, including miles per gallon (MPG), liters per 100 kilometers (L/100km), kilometers per liter (km/L), and more.

Result

Conversion Formulas

MPG to L/100km:

L/100km = 235.215 ÷ MPG

L/100km to MPG:

MPG = 235.215 ÷ L/100km

km/L to L/100km:

L/100km = 100 ÷ km/L

MPG to km/L:

km/L = MPG × 0.425144

Fuel Efficiency Comparison

Compact Car (35 MPG / 6.7 L/100km)
Midsize Sedan (30 MPG / 7.8 L/100km)
SUV (25 MPG / 9.4 L/100km)
Pickup Truck (20 MPG / 11.8 L/100km)
Hybrid Vehicle (50 MPG / 4.7 L/100km)
Electric Vehicle (120 MPGe / 2.0 L/100km equivalent)

Bar length represents relative fuel efficiency (longer = better)

Inverse Relationship Explained

Note that L/100km is inversely related to MPG and km/L:

Higher MPG or km/L = Better Efficiency

You want these values to be higher

↑ = GOOD

Lower L/100km = Better Efficiency

You want these values to be lower

↓ = GOOD

Real-world Applications

Trip Planning

A car with 30 MPG driving 300 miles would require 10 gallons of fuel. At $3.50/gallon, the fuel cost would be $35.00.

Vehicle Comparison

A vehicle rated at 7 L/100km compared to one at 10 L/100km would save 3L of fuel every 100km, or approximately 30% in fuel costs.

Environmental Impact

A 5 MPG improvement (from 25 to 30 MPG) in a vehicle driven 12,000 miles annually reduces CO₂ emissions by approximately 1 ton per year.

Fleet Management

A company fleet of 50 vehicles improving from 8.5 L/100km to 7.5 L/100km could save approximately 5,000L of fuel annually over 100,000km total distance.

Global Standards

U.S. CAFE standards target approximately 49 MPG (4.8 L/100km) by 2026, while EU regulations aim for 3.6 L/100km (65 MPG) by 2030.

Hybrid Technology

A hybrid vehicle achieving 50 MPG compared to its conventional 30 MPG counterpart reduces fuel consumption by 40% for the same distance traveled.

Test Your Knowledge

Question 1: Convert 35 MPG to L/100km

Question 2: Which is more fuel efficient: 40 MPG or 6 L/100km?

Question 3: If a car has a fuel efficiency of 18 km/L, what is its equivalent in L/100km?

Note: These interactive elements would require JavaScript implementation to fully function.

About Fuel Consumption Units

Fuel consumption measures how efficiently a vehicle uses fuel to travel a given distance. Different countries and regions use different units to express this efficiency.

Common Fuel Consumption Units

  • Miles per gallon (MPG): Used in the United States and the United Kingdom, MPG measures how many miles a vehicle can travel on one gallon of fuel. Higher MPG indicates better fuel efficiency.
  • Liters per 100 kilometers (L/100km): The standard in most European and many other countries. It measures the amount of fuel consumed to travel 100 kilometers. Lower L/100km indicates better fuel efficiency.
  • Kilometers per liter (km/L): Common in Japan, India, and other countries. Similar to MPG, it measures distance traveled per unit of fuel. Higher values indicate better efficiency.
  • Miles per liter (MPL): A less common unit that measures how many miles a vehicle can travel on one liter of fuel.
  • Gallons per 100 miles (gal/100mi): The inverse of MPG, sometimes used for comparative analyses. Lower values indicate better efficiency.

Conversion Formulas

  • MPG to L/100km: L/100km = 235.215 / MPG
  • L/100km to MPG: MPG = 235.215 / L/100km
  • km/L to L/100km: L/100km = 100 / km/L
  • L/100km to km/L: km/L = 100 / L/100km
  • MPG to km/L: km/L = MPG × 0.425144
  • km/L to MPG: MPG = km/L × 2.35215

Typical Fuel Consumption Values

Vehicle TypeMPG (US)L/100kmkm/L
Compact car30-405.9-7.812.8-17.0
Midsize sedan25-356.7-9.410.6-14.9
SUV20-307.8-11.88.5-12.8
Pickup truck15-259.4-15.76.4-10.6
Hybrid vehicle45-603.9-5.219.1-25.5
Plug-in hybrid100-1501.6-2.442.5-63.8

Factors Affecting Fuel Consumption

  • Vehicle weight: Heavier vehicles typically consume more fuel.
  • Engine size and type: Larger engines generally use more fuel, while modern technologies like direct injection and turbocharging can improve efficiency.
  • Driving habits: Aggressive acceleration and braking, high speeds, and excessive idling increase fuel consumption.
  • Terrain: Driving in hilly or mountainous areas typically increases fuel consumption compared to flat terrain.
  • Weather conditions: Extreme temperatures, especially cold, can reduce fuel efficiency.
  • Maintenance: Proper maintenance, including regular oil changes and correct tire pressure, helps maintain optimal fuel efficiency.
  • Vehicle aerodynamics: More aerodynamic vehicles experience less drag, improving fuel efficiency at higher speeds.

Tips for Improving Fuel Efficiency

  • Drive smoothly, avoiding rapid acceleration and braking
  • Maintain a steady speed on highways and use cruise control when appropriate
  • Keep tires properly inflated
  • Remove unnecessary weight from the vehicle
  • Use the recommended grade of motor oil
  • Limit air conditioner use when possible
  • Plan trips to combine errands and avoid traffic congestion
  • Keep your vehicle properly maintained with regular service