Appearance is one of the criteria forming the aesthetic perception of a particular vehicle. However, the appearance of the car is a factor determining the consumers’ opinion about the brand of the car. Many vehicles during their operation for many different reasons undergo repair and restoration operations. As a rule, repairing body elements the paintwork is performed, the quality of which and the observance of technologies and standards during work ultimately determine the durability of the paintwork. The quality of the paintwork, the presence of damage, fragments of destruction is one of the essential aspects that interest consumers in the secondary market. The article presents the results of a study of the paintwork quality of the Volkswagen Tuareg car body elements; the presence of defects is identified, the causes of their occurrence are detected.

The article considers the task of choosing the optimal set of silica tubes for the operation of jacketing in the production of optical fiber, taking into account the available types of silica tubes, the features of the used equipment and the quality of products in previous cycles of production. The model, which allows considering the previous experience at a performance of the operation of a jacketing during the industrial process based on the decision of a problem of classification results. The model takes into account the physical features of the process and uses the results of technological operations for further refinement and correction. For primary education, the models used already available statistical data. Practical application of the model allows getting many possible solutions to the problem of selection of jacket tubes, which helps to reduce scrap in the jacketing.