The paper discusses the use of vibrodiagnostics in automotive production. Describes the Fast Fourier Transformation and its importance in evaluating the measured values. It focuses on the process of honing the toothing of shafts used in series-produced gearboxes. Describes 3 different states of amplitude with consideration to the set limit. In the first state, all production criteria are met. In the second state, the limit is exceeded and the specific error and its impact on the continuation of production are described. The third state describes the extreme crossing of the limit and the consequences for this state. Finally, the importance and practicality of the method for predicting production conditions are summarized.