light passenger car; minicar; subcompact
Refers to a small passenger vehicle, typically with an engine displacement of 660cc or less, common in Japan's kei car category.
Light passenger cars have low taxes.
軽自動車 is the broader category of kei cars, which includes both passenger and commercial vehicles. 軽乗用車 specifically refers to the passenger car type within that category.
Compound of 軽 (light, small), 乗用 (passenger use), and 車 (vehicle).