Brake Horsepower (BHP) is a unit for measuring the power of a car engine, representing the power an engine can output at a specific rotational speed. A higher value indicates a more powerful engine. It reflects the engine's ability to do work per unit time and affects the vehicle's acceleration performance and top speed. Torque, on the other hand, is the rotational force output by the engine, commonly measured in Newton-meters (Nm). It represents the force with which the engine drives the wheels and determines the vehicle's starting power, climbing ability, and low-speed traction. For example, heavy-duty vehicles require high torque to overcome heavy-load resistance. These two are inseparable: horsepower is calculated from torque and rotational speed (Power in kW = Torque in Nm × Rotational Speed in rpm / 9549). Torque determines starting and low-speed performance, while horsepower affects acceleration and sustained power output at medium and high speeds. Additionally, BHP is close in value to PS (metric horsepower) commonly used in Germany—100 BHP is approximately equal to 101 PS. The imperial unit of torque, pound-feet (lb-ft), converts to Nm at a ratio of about 1.355. These parameters together help consumers understand the vehicle's dynamic performance.
