1.
engine displacement; engine capacity
The total volume of all cylinders in an internal combustion engine, typically measured in cc (cubic centimeters) or liters. A key specification for cars and motorcycles that also determines tax and licensing categories in Japan.
排気量は2000ccだ。
The engine displacement is 2000cc.
A key automotive term in Japan where 排気量 directly affects vehicle classification, taxes, and insurance costs. Japan's 軽自動車 (kei car) category is defined by a maximum displacement of 660cc. For motorcycles, licensing categories are also based on displacement: 原付 (50cc), 小型 (125cc), 中型 (400cc), 大型 (over 400cc). Common collocations: 排気量が大きい/小さい (large/small displacement).