1. Engine system: check engine status, sensors, spark plugs, etc. So as to ensure the normal operation of the engine.
2. Chassis system: Check the chassis system of the vehicle, including suspension, braking, steering and tires, to ensure its normal operation and safety.
3. Electrical and electronic system: check the electrical and electronic equipment such as battery, generator, starter, lighting, instrument panel, audio and navigation. To ensure their normal work.
4. Exhaust system: Check exhaust pipes, catalysts, oxygen sensors and other exhaust equipment to ensure that vehicle emissions meet environmental standards.
5. Body and appearance: Check the exterior parts of the body such as paint, windows, exterior lights and wipers to ensure the overall appearance of the vehicle is intact.
There may be some differences in different types of vehicle testing items, and the specific situation needs to be confirmed according to local laws and regulations and the provisions of testing institutions. Owners and drivers should regularly check their vehicles and observe the relevant vehicle maintenance and safety requirements to ensure the safety of themselves and others.