What are the exhaust emission standards for vehicle annual inspections?
2 Answers
1. Without pressing the foot brake, press the start button twice consecutively and wait for at least 6 seconds. 2. Press the foot brake and push the start-stop button to ignite the engine. 3. Release the foot brake and warm up the vehicle. The warm-up duration depends on the vehicle model and ambient temperature. 4. Press the foot brake, release the handbrake, and shift the gear from P to D. 5. Slowly release the foot brake to start moving. Below is additional information about smart car keys: 1. The car keyless entry system, abbreviated as PKE, is essentially a smart key or smart card. 2. When the key approaches the vehicle body, the doors automatically unlock and the anti-theft alarm is deactivated, accompanied by the turn signals flashing twice. 3. When the key moves away from the vehicle body, the doors automatically lock and the anti-theft alarm is activated, with the turn signals flashing once and the horn emitting a short beep.
I remember when I went for the annual inspection last time, the exhaust emission test was really strict. The basic standard is that the pollutants emitted from your car's exhaust pipe must not exceed the limits. For example, carbon monoxide should not exceed 0.3% at idle speed, and the requirement is even stricter at high idle speed with a lower limit. Hydrocarbons must be below 100ppm, and nitrogen oxides are also restricted. The requirements vary for vehicles of different ages—newer cars have higher standards, while older ones are slightly more lenient, but all must meet the criteria. If the exhaust emissions exceed the limit, it’s mostly due to a worn-out catalytic converter or excessive carbon buildup, which requires cleaning or replacement. Regular maintenance, such as changing the air filter and using high-quality fuel, can help you pass easily. I’ve also heard that many owners fail the test because the engine wasn’t properly warmed up before inspection, so warming up the car for 10 minutes beforehand is crucial. In short, passing the exhaust test isn’t just about clearing the inspection—it’s also better for the environment by reducing pollution. If you fail, you’ll need repairs, which can be costly, so it’s advisable to check your car’s condition before each annual inspection to avoid unexpected expenses.
