What does Nm mean in cars?

[CaliMarie]

It should be Newton-meter, which is the unit of vehicle torque. The unit of torque is the product of the unit of force and the unit of distance. Engine torque: Refers to the moment output from the crankshaft end of the engine. Under fixed power conditions, it is inversely proportional to engine speed - the faster the speed, the smaller the torque, and vice versa. This reflects the vehicle's load capacity within a certain range. External torque is called turning moment or external couple moment, while internal torque is called internal couple moment or simply torque. Torque values: At each rotational speed, there is a corresponding torque value. Dividing these values by a length yields force data.