How do you detect a bug in a vehicle?

To detect a bug in a vehicle, start by observing any unusual behaviors, such as strange noises, warning lights on the dashboard, or changes in performance. Conduct a thorough visual inspection of the vehicle's systems, including the engine, brakes, and electrical components. Utilizing diagnostic tools like OBD-II scanners can help identify error codes that point to specific issues. Test drives can also reveal problems, allowing you to notice any irregularities in handling or responsiveness.