Liter/100 km or km/liter, which one is used in Japan?


In America we say the fuel economy of car as miles/gallon (miles per gallon).
I know in some countries people use Liter/100 km (liter per 100 km). Some
countries use km/Liter (km per liter).

Which format do Japanese people use, L/100 km or km/L?




We use kilometers per liter only.




That would be km/L (only).

[![燃費](https://i.stack.imgur.com/U12Pg.jpg)](https://i.stack.imgur.com/U12Pg.jpg)  
(source: [車ラボ.com](http://xn--zdkza0666d.com/wp-
content/uploads/2015/12/abb3c303622f03654433809fdad5ac83.jpg))

Fuel efficiency is called 燃費 and "fuel efficient" or "fuel inefficient" are
called 燃費がいい or 燃費が悪い.

