Engines were rated according to a wide range of characteristics including horsepower and torque, fuel economy, noise, vibration and harshness characteristics, technology and how they fared against competing powerplants. 各位专家根据多项特征进行打分,包括动力和扭矩、燃料经济、噪音、抖动和声振粗糙度、技术以及这些发动机相对于竞争对手的表现。
The fact is that an engine may not always do work at its rated horsepower. 事实是发动机并非始终以额定马力做功。