Fuel Efficiency Calculator
Calculate MPG, L/100km, and fuel costs for your vehicle
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Fuel Efficiency Results
Enter distance and fuel used to calculate efficiency
Understanding Fuel Efficiency
Fuel Efficiency Metrics
Fuel efficiency is measured differently around the world. The United States uses MPG (miles per gallon), while most other countries use L/100km (liters per 100 kilometers) or km/L (kilometers per liter).
Conversion Formulas:
MPG to L/100km: 235.215 ÷ MPG
L/100km to MPG: 235.215 ÷ L/100km
MPG to km/L: MPG × 0.425144
km/L to MPG: km/L × 2.35215
Why Fuel Efficiency Matters
Understanding your vehicle's fuel efficiency helps you save money, reduce environmental impact, and make informed decisions about vehicle maintenance and driving habits.
- •Cost Savings: Better efficiency means lower fuel costs
- •Environmental Impact: Less fuel consumption reduces emissions
- •Vehicle Health: Changes in efficiency can indicate maintenance needs
- •Travel Planning: Helps estimate fuel costs for trips
Fuel Efficiency Standards
| Vehicle Type | MPG Range | L/100km Range | Rating |
|---|---|---|---|
| Compact Car | 30-45 MPG | 5.2-7.8 L/100km | Good to Excellent |
| Midsize Car | 25-35 MPG | 6.7-9.4 L/100km | Average to Good |
| SUV | 20-30 MPG | 7.8-11.8 L/100km | Average |
| Truck | 15-25 MPG | 9.4-15.7 L/100km | Poor to Average |
| Hybrid | 40-60 MPG | 3.9-5.9 L/100km | Excellent |
| Electric | 100+ MPGe | 0 L/100km | Outstanding |
Fuel Efficiency Tips
Driving Habits
Improve your driving technique
- • Maintain steady speeds
- • Avoid rapid acceleration
- • Use cruise control
- • Anticipate traffic flow
- • Avoid excessive idling
Vehicle Maintenance
Keep your vehicle in top shape
- • Regular oil changes
- • Proper tire inflation
- • Clean air filters
- • Regular tune-ups
- • Use recommended fuel
Trip Planning
Plan your routes efficiently
- • Combine errands
- • Avoid rush hour
- • Use GPS for routes
- • Carpool when possible
- • Consider alternatives
Vehicle Load
Reduce unnecessary weight
- • Remove excess cargo
- • Clean out trunk
- • Avoid roof racks
- • Use lightweight materials
- • Remove bike racks
Climate Control
Use AC and heating wisely
- • Use AC moderately
- • Park in shade
- • Use ventilated seats
- • Pre-cool before driving
- • Dress appropriately
Technology
Use modern features
- • Eco mode settings
- • Start-stop systems
- • Regenerative braking
- • Efficiency displays
- • Navigation assistance
Environmental Impact
CO2 Emissions
Fuel efficiency directly impacts carbon dioxide emissions. Better fuel economy means less CO2 released into the atmosphere.
Typical Emissions:
• Gasoline: 8.89 kg CO2 per gallon
• Diesel: 10.16 kg CO2 per gallon
• Improving from 20 to 30 MPG saves ~1.5 tons CO2/year
Global Standards
Different countries have varying fuel efficiency standards and environmental regulations to reduce vehicle emissions.
Regional Standards:
• USA: CAFE standards (Corporate Average Fuel Economy)
• EU: CO2 emission limits (g/km)
• China: Fuel consumption standards (L/100km)