A Certificate in Four-Wheeler Maintenance (often titled Automotive Service Technician) is a practical, hands-on program designed to turn car enthusiasts into professional mechanics.While older courses focused purely on "nuts and bolts," 2026-era certificates now include significant training in onboard diagnostics (OBD) and electric vehicle (EV) basics, as modern cars are essentially computers on wheels.The course focuses on the "preventative" and "corrective" maintenance of light motor vehicles. Students learn to identify, dismantle, repair, and reassemble the major systems that keep a four-wheeler running safely and efficiently.