赛车 (sài chē) literally combines 赛 (sài), meaning 'contest' or 'race', and 车 (chē), meaning 'vehicle' or 'car'. Together, it refers specifically to high-performance automobiles designed for competitive racing—such as Formula 1, rally, or endurance events. It can also denote the sport itself: 'car racing'.

In everyday usage, 赛车 often appears in contexts like motorsport events, automotive journalism, video games, or casual conversation about speed and competition. While 赛车 can refer to the vehicle or the activity, context usually clarifies the meaning—for example, 我喜欢看赛车 usually means 'I like watching car races', not 'I like watching racing cars' as static objects. The term carries connotations of excitement, technology, and athleticism, distinguishing it from ordinary vehicles like 私家车 (private cars) or 公交车 (buses).