In Automotive Industry 8D method is most commonly used. The eight disciplines (8D) model is a problem-solving approach typically employed by quality and production engineer. The goal of this strategy is to discover problems, correct them, and eliminate reoccurring problems, as well as to enhance products and processes. Customer satisfaction is a critical factor in the industrial sector’s ability to compete and survive. The 8D Technique is used to address problems, lower overall quality improvement costs, and increase customer satisfaction. The cause of the process failure was investigated using this methodology. Improvements were planned and the variable was kept under control until a certain level of performance was achieved. We investigate the nature of defect occurrence, collecting data on the number of defects that occurred over the course of one month, using data collection to identify the problems that are causing the highest rate of rejection and rework percentage using a Pareto chart, to determine the causes using a cause-and-effect diagram, and to determine whether the process is under control or not using statistical control charts such as pie charts and bar graphs.