Fully functional EURO4 petrol (gasoline) engine with an integrated LPG system. The system includes an OBD 16-pin diagnostic socket for real-time data analysis, fault reading, and deletion, as well as open contacts for precise electrical measurements. Fault simulation is enabled through removable jumpers, allowing students to observe engine behavior under various conditions. Featuring a centralized control panel with labeled components and wiring diagrams, it supports efficient monitoring and control. Safety is ensured through internal wiring and removable protective panels, while the robust design promotes durability and mobility for collaborative use in classrooms. Mounted on a durable metal frame with transport wheels, it offers practical diagnostic and hands-on training.