The objective of this project is to plane Proposal for the Design of Engine Overhaul workshop with better characteristics. The number of cars in Egypt is increasing year after years. This need the improvement of the level of car service, the engine is regarded as the most important part in the vehicle as it is responsible for providing power to the vehicle, so it must achieve the standard specifications. Therefore, the workshop should be well equipped with all necessary tools and machines, perfectly designed and planned, managed well and have highly qualified workers. in this project we will discuss the workshop site selection, the designing of the workshop, workshop safety, the cost and Also will show how to do the repairs and the major engine overhaul procedures in details which start from engine testing and diagnosis, engine removal, engine disassembly, engine inspection and measurement, engine service and ending with engine assembly and installation.