更多燃油效率换算
燃油效率单位相互转换：MPG、km/L、L/100km等。免费在线燃油效率换算器，方便比较不同计量系统下的车辆油耗。
选择两个单位进行换算：
常用%name%换算
About 燃油效率
Fuel efficiency conversion is crucial for comparing vehicle performance across different regions and measurement systems. Understanding these conversions helps consumers make informed decisions about vehicle purchases, fuel costs, and environmental impact.
Three primary systems measure fuel efficiency: miles per gallon (MPG) used in the US and UK, kilometers per liter (km/L) used in many Asian and South American countries, and liters per 100 kilometers (L/100 km) used in Europe, Australia, and Canada. These systems measure the same concept from different perspectives.
MPG and km/L measure distance per unit of fuel (higher is better), while L/100 km measures fuel per unit of distance (lower is better). Converting between these systems requires inverting some relationships: for example, converting US MPG to L/100 km involves dividing 235.21 by the MPG value.
The difference between US and imperial gallons adds further complexity. A US gallon is approximately 3.785 liters, while an imperial (UK) gallon is about 4.546 liters. This means 30 MPG (US) equals about 36 MPG (imperial), a significant difference that can affect vehicle comparisons across regions.
Frequently Asked Questions
How do I convert MPG to L/100 km?
To convert US MPG to L/100 km, divide 235.21 by the MPG value. For example, 30 MPG (US) equals 235.21 divided by 30 equals 7.84 L/100 km. For imperial MPG, divide 282.48 by the MPG value instead. Note that MPG is distance-per-fuel while L/100 km is fuel-per-distance, so the relationship is inverse.
What is the difference between US MPG and UK MPG?
The US gallon equals approximately 3.785 liters, while the UK (imperial) gallon equals approximately 4.546 liters, about 20 percent larger. This means a car rated at 30 MPG in the US would be rated at approximately 36 MPG in the UK, even though it consumes the same amount of fuel per distance.
Why do European cars show L/100 km instead of MPG?
European countries use the metric system and express fuel efficiency as liters per 100 kilometers (L/100 km). This inverse measure makes it easy to compare: lower numbers mean better efficiency. It also simplifies cost calculations by multiplying L/100 km by fuel price per liter to get cost per 100 km.
What is considered good fuel efficiency?
In the US, a good fuel efficiency rating is 30+ MPG (7.8 L/100 km or less) for a compact car. Hybrids achieve 50+ MPG (4.7 L/100 km), and electric vehicles are rated in miles per kWh. Standards vary by vehicle class since what is good for an SUV differs from what is good for a compact car.