How do I convert MPG to L/100km?

Use the formula: L/100km = 235.21 / MPG. Example: 25 MPG = 235.21/25 = 9.41 L/100km. Reverse: MPG = 235.21 / (L/100km). The number 235.21 comes from the conversion of miles to km and gallons to liters combined.

What is the difference between US and Imperial MPG?

US MPG uses the US gallon (3.785 L). Imperial MPG uses the UK gallon (4.546 L). A car rated at 30 US MPG = approximately 36 Imperial MPG. European and Canadian efficiency ratings use L/100km. Always check which standard is being used when comparing international vehicle specs.

How much does fuel efficiency matter financially?

Going from 25 MPG to 35 MPG saves about $500-700/year at 12,000 miles/year and $3.50/gallon fuel. The formula: annual savings = (1/old MPG - 1/new MPG) x annual miles x price per gallon. Better fuel efficiency also reduces CO2 emissions proportionally.

What factors affect real-world fuel efficiency?

Real MPG can differ 20-30% from EPA estimates due to: driving style (aggressive acceleration reduces MPG 15-40%), speed (every 5 mph above 50 mph reduces MPG by 7-14%), tire pressure (underinflated tires reduce MPG by 0.2% per PSI), air conditioning (reduces MPG by 5-25%), cold weather (cold engines use 12-30% more fuel), and cargo weight.

Fuel Efficiency - Volume Converter

Convert between m/m³, km/L, mpg (US/UK) and other volumetric fuel efficiency units.

About Fuel Efficiency by Volume

Volumetric fuel efficiency expresses the distance traveled per unit volume of fuel. The SI unit is m/m³. Practical everyday units include km/L and mpg.

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Fuel Efficiency - Volume Converter

About Fuel Efficiency by Volume

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