How Do You Convert MPG to L/100km?
Convert miles per gallon (mpg), liters per 100 km (L/100km), and kilometers per liter (km/L) instantly. Our fuel economy converter helps you compare car efficiency across US, European, and metric standards.
How it works
MPG and L/100km are inversely related — a higher MPG means a lower L/100km. The conversion is: L/100km = 235.215 ÷ mpg. Note that US mpg and UK mpg differ because US and UK gallons have different volumes.
Quick reference
Frequently Asked Questions
How do you convert mpg to L/100km?
Divide 235.215 by the mpg value. For example, 30 mpg = 235.215 ÷ 30 = 7.84 L/100km. Note that mpg and L/100km are inversely related — a higher mpg means a lower L/100km.
How do you convert L/100km to mpg?
Divide 235.215 by the L/100km value. For example, 8 L/100km = 235.215 ÷ 8 = 29.4 mpg.
What is a good fuel economy in L/100km?
A fuel-efficient compact car typically achieves 5–7 L/100km. SUVs and trucks often use 9–14 L/100km. Electric vehicles are rated separately in kWh/100km.
What is the difference between US mpg and UK mpg?
The US gallon (3.785 L) is smaller than the UK imperial gallon (4.546 L), so UK mpg figures are about 20% higher for the same vehicle. Always check which gallon standard is used.
How do you convert km/L to L/100km?
Divide 100 by the km/L value. For example, 15 km/L = 100 ÷ 15 = 6.67 L/100km. The two scales are simply reciprocals of each other.
What is good fuel economy for a car?
A fuel-efficient compact car achieves 5–6 L/100km (40–47 MPG). An average family sedan uses 7–9 L/100km (26–34 MPG). SUVs and larger vehicles typically use 10–14 L/100km (17–24 MPG). Hybrid vehicles achieve 4–5 L/100km (47–59 MPG). Plug-in hybrids and EVs use 15–20 kWh per 100 km.
How far can a car go on a full tank?
With a 55-liter tank and average fuel consumption of 8 L/100km, a car can travel about 687 km (427 miles) on a full tank. A more efficient car at 6 L/100km with the same tank goes about 917 km (570 miles). Most cars have a range of 500–800 km per fill-up under normal driving conditions.
How much does it cost to fill up a car in Europe vs the US?
European petrol prices are typically €1.50–2.00 per liter ($1.60–2.15/L). In the US, gasoline averages $0.95–1.30 per liter ($3.50–5.00 per US gallon). To fill a 55-liter tank: roughly €83–110 in Europe vs. $52–72 in the US. European cars tend to be more fuel-efficient to compensate for higher fuel prices.
What does L/100km mean and how do I read it?
L/100km means how many liters of fuel your car consumes per 100 kilometers traveled. Lower is better — 5 L/100km is more efficient than 10 L/100km. To convert to US MPG, divide 235.215 by the L/100km value: 8 L/100km = 235.215 ÷ 8 = 29.4 MPG.
How fuel-efficient are electric vehicles compared to petrol cars?
Electric vehicles (EVs) use 15–20 kWh per 100 km, which is equivalent to about 1.5–2 L/100km of gasoline in energy terms — roughly 4–5× more efficient than combustion engines. At an electricity price of €0.30/kWh, driving 100 km costs about €4.50–6.00, compared to €12–16 for a petrol car at €1.60/L and 8 L/100km.