This thesis describes the study of an Automobile Workshop in Indonesia upon current business processes in order to advise the organizations in measuring the size of the gaps (gaps) that exist between current business processes. This is a descriptive qualitative study with a descriptive design. The findings of this study suggest that business process improvement is accomplished through the use of Business Process Management Notation (BPMN) tools and a Business Process Re-engineering approach, which leads to improvement strategies such as redesigning the overall process flow to make it more efficient (Parallelism). With the adoption of some devices, also the to-be model is simple to implement. As a result, this model is 30% more efficient than the as-is model.