Can the emission standard (National Standard) be identified from the vehicle license?

2 Answers
SamanthaDella
07/28/25 11:02pm
Can the emission standard (National Standard) be identified from the vehicle license? For vehicle models starting with BH, those ending with W or X indicate China III (National 3), Y indicates China IV (National 4), V indicates China V (National 5), and VI indicates China VI (National 6) emission standards. China VI emission standard, specifically the National Sixth Stage Limits for Emission Pollutants from Motor Vehicles, is established to implement the Environmental Protection Law and the Air Pollution Prevention and Control Law, aiming to prevent pollution from compression-ignition and gas-fueled spark-ignition engine vehicles, protect the ecological environment, and safeguard human health. The motor vehicle license is the legal document permitting a vehicle to drive on roads within China, consisting of a license holder, main page, and supplementary page.
Was this review help?
16
1
Share
MacAnthony
08/12/25 3:27am
The emission standard (such as National III, IV, etc.) is usually not directly visible on the vehicle license. It mainly records basic vehicle information like license plate number, owner's name, and engine model. The emission standard is typically indicated on the vehicle registration certificate, environmental protection label, or related documents. Alternatively, you can determine it by querying the traffic management department's database using the vehicle's VIN. I recommend paying attention to the environmental protection label during annual inspections or ownership transfers, as it will clearly state the standard. If you want to check while driving, you can use some apps to input the VIN for a quick and practical solution. The emission standard is quite important, especially since many cities now have driving restrictions for National III and IV vehicles. Knowing it in advance can help avoid penalties or travel disruptions. If your car is older and fails to meet emission standards, it might also affect passing the annual inspection. Keeping an eye on these details can save you a lot of hassle.
Was this review help?
10
1
Share
Expand All
More Forum Discussions

What are the symptoms of a damaged high-pressure fuel pump in a car?

Severe shaking, weak acceleration, unstable idle, difficulty starting, and even stalling may occur. Both the fuel pump and the high-pressure fuel pump can fail, although the probability of failure is not high. The reasons for a diesel engine's difficulty starting when hot are as follows: Clogged diesel filter: The low-pressure fuel line is blocked, causing intermittent diesel supply, the fuel transfer pump to draw air, air in the fuel line, and no fuel in the injection pump. Aging injection pump: Internal leakage in the plunger reduces fuel injection volume, delays fuel supply timing, and worsens these issues when the engine is hot. Aging fuel transfer pump: Internal leakage in the piston reduces suction and pressure capability, the check valve does not close tightly, and fuel flows back. Clogged air filter: The air filter is blocked, leading to insufficient air intake. Worn high-pressure fuel pump: Insufficient pressure due to thermal expansion, as sometimes fuel quality issues cause the pump to wear out particularly quickly.
15
1
Share

What is the basis for SUV classification?

SUV classification is based on factors such as wheelbase, body length, and engine displacement. SUVs can be categorized into small SUVs, compact SUVs, mid-size SUVs, economy SUVs, mid-high-end SUVs, luxury SUVs, and ultra-luxury SUVs. An SUV refers to a Sports Utility Vehicle, which is a suburban practical vehicle combining the space functionality of a station wagon with the off-road capability of a pickup truck. SUVs are characterized by powerful performance, excellent off-road capability, spacious comfort, and good cargo and passenger capacity. While traditional off-road vehicles excel in terrain adaptability, they often lack in sportiness and comfort. When these shortcomings are addressed and enhanced, the vehicle can be referred to as an SUV.
17
3
Share

What does the flashing yellow i-stop light on the Mazda 3 Axela indicate?

The flashing yellow i-stop light on the Mazda 3 Axela indicates that the auto start-stop system has been deactivated and cannot function normally. Under normal circumstances, the i-stop system is enabled by default (green when active, yellow when inactive). When the vehicle comes to a temporary stop, the engine automatically shuts off, and pressing the accelerator pedal restarts the engine normally. To address the yellow i-stop light issue, simply reactivate the i-stop system. The Mazda 3 Axela's auto start-stop feature has usage restrictions: it won't operate properly if the car battery lacks sufficient charge, if the battery temperature is too high or too low, or if seat belts aren't fastened during driving. The Mazda 3 Axela measures 4582mm in length, 1795mm in width, and 1458mm in height, with a wheelbase of 2726mm.
2
4
Share

What should be paid attention to during the first maintenance?

During the first maintenance, the following points should be noted: 1. Replace the engine oil and oil filter, and clean the air filter; 2. Check whether the coolant level of the car is in a normal state; 3. Inspect the car's brakes and whether there are any scratches on the chassis components; 4. Check if the power steering fluid level is normal and whether there are any oil leaks at the oil pipe connections; 5. Examine the generator, air conditioning, water pump, and the aging and tension of the belts. The first maintenance time is determined by two indicators: mileage and time, whichever comes first. The first maintenance time and maintenance cycle vary for different cars; some cars require it at only 2,000 kilometers, while others may need it at up to 8,000 kilometers. This variation is due to differences in the specific technical conditions of the vehicles.
7
4
Share

How to Pass Through Highway Toll Stations for Beginners

Methods for beginners to pass through highway toll stations: Before entering the toll station, drivers should closely observe the overhead light signals in the lanes and choose an entrance with a green light. Reduce speed and proceed in an orderly queue, avoiding rushing or competing for lanes. When approaching the toll booth, position the vehicle as close as possible to the toll kiosk, aligning the driver's side window with the toll window to facilitate cash, ticket, or pass card transactions between the toll collector and driver. Toll stations are generally located in two configurations: one is directly on the main highway, also known as barrier-type, typically used at the start or end points of tolled highway sections; the other is situated at interchanges or connecting ramps, commonly employed at grade-separated intersections between tolled highway segments to control vehicles entering or exiting the mainline from intersecting roads.
15
2
Share

What is the size of the photo for a driver's license?

The photo for a driver's license is 3.2cm × 2.2cm. Below is relevant information about the driving test: Definition of driving test simulation fee: The simulation fee and venue fee refer to the costs required for simulating the test at the examination venue. During the process of obtaining a driver's license, apart from the registration fee, simulation fee, and venue fee, there are no other costs. However, the decision to take the simulation test or not is entirely up to the individual—you can choose to simulate or not. Driving test: Applicants for a motor vehicle driver's license must pass the following four subjects: Subject 1—Road traffic safety laws, regulations, and related knowledge test; Subject 2—Venue driving skills test; Subject 3—Road driving skills test; and Subject 4—Safe and civilized driving knowledge test. The test sequence follows Subject 1, Subject 2, Subject 3, and Subject 4 in order. Only after passing the previous subject can one proceed to the next subject's test.
20
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.