This 2012 book is an internship report in the field of automobile mechanics at the Automobile Research and Engineering Center (OFPPT CREA), motor vehicle repair mechanic section. As part of the end-of-training internship report within CREA (Automotive Research and Engineering Center), and to obtain the title of Engine Repair Technician, a 6-month alternating internship was carried out at within the AUTO HALL SCAMA FORD company, the exclusive distributor of FORD vehicles in MOROCCO.