Vehicle Inspection, Testing and Quality Control
Vehicle Inspection, Testing and Quality Control
This domain tests inspection standards, test equipment, documentation and quality control. Expect questions on MOT test criteria, pre-delivery inspection, calibrated equipment, rectification and final sign-off.
Inspection and quality rules
Use calibrated equipment and record measurements. Brake testing, headlamp aim, emissions and tyre tread checks must follow the applicable standard. A pre-delivery inspection checks fluids, tyre pressures, wheel torque, function of controls, warning lights and software status. Quality control is not a final glance; it includes torque audits, sample checks, correct part numbers and traceable records. Rectified work must be re-inspected and signed off by a competent person. Advisories must be recorded accurately, and the customer handover should explain them.
Worked example
A vehicle fails inspection because a front brake disc is below the stamped minimum thickness. Reasoning: measure with a micrometer, compare with the minimum marking, replace discs in axle pairs, fit new pads as required, bed them in and re-test. Record the measurement, part numbers and technician. The quality control sign-off happens only after the re-test, not before.
Traps
- Omitting an advisory because it seems minor.
- Using an uncalibrated torque wrench or brake tester.
- Signing off before re-inspection.
- Recording a pass without the measured value.
- Failing to check software or warning lights during pre-delivery inspection.