···
Log in / Register

When did China National IV vehicles start?

3 Answers
LeilaniAnn
08/29/25 4:20am
China National IV vehicles started on July 1, 2011, and lasted until the implementation of National V standards in 2018. Vehicles produced between 2011 and 2017 complied with National IV standards. The National IV standard requires approximately 50% lower emissions of various pollutants compared to National III. Here are the reasons for updating emission standards: The reason why the country frequently updates emission standards is that with the increase in car ownership, the environmental pollution caused by vehicle exhaust has become increasingly severe. Vehicle exhaust contains harmful gases such as carbon monoxide and hydrocarbons, and the emission standards set limits on the emissions of these gases.
Was this review help?
19
4
Share
OwenDella
09/11/25 2:10am
I remember the China IV emission standards for vehicles were officially implemented nationwide starting from July 1, 2011. At that time, I was buying a car, and the salesperson specifically reminded me that new cars had to meet the standards, otherwise they couldn't be driven on the road. These standards mainly targeted light-duty vehicles, with heavy-duty vehicles following a bit later in 2013. They required cars to reduce emissions of pollutants like nitrogen oxides and particulate matter, leading many new cars to be equipped with more advanced fuel injection technologies. This was quite helpful for environmental protection, but it also caused car prices to rise slightly. Nowadays, China IV-compliant vehicles have become widespread, but you still need to be careful when buying used cars because some major cities impose restrictions. Personally, I think knowing this timeline is practical for both maintenance and car replacement, helping to avoid purchasing used vehicles that don't meet local requirements.
Was this review help?
3
5
Share
Expand All
LaJayla
10/25/25 3:00am
The National IV emission standard for vehicles was implemented in July 2011, which I discovered while researching automotive emissions. Light-duty vehicles adopted this standard nationwide at that time, with stricter emission requirements than National III, resulting in better pollutant control. Vehicles were equipped with OBD systems for monitoring, and some models even upgraded their catalytic converters. This not only reduced air pollution but also drove advancements in engine technology. I now often recommend friends to purchase National IV used cars for their high cost-performance ratio, though they might face restrictions in cities like Beijing, Shanghai, Guangzhou, and Shenzhen. Understanding this timeline helps in selecting vehicles wisely, ensuring a trouble-free driving experience.
Was this review help?
9
5
Share
Expand All
More Forum Discussions

How to activate the Mercedes-Benz parking assist system?

When parking is required, the driver only needs to press the parking assist control button on the center console to activate the system. First, the system determines the parking position by measuring and calculating the required distance to park between two vehicles. The control unit uses position sensors installed on the front and rear bumpers to measure the distance between the parked vehicles around the parking space. During the operation of the parking assist system, the driver does not need to turn the steering wheel. The automatic control system can manage the entire vehicle steering process.
18
1
Share

What is the reason for the loose rearview mirror cover that won't stay in place?

The rearview mirror cover falling off and not staying firmly in place is due to damaged clips. Below are detailed instructions for adjusting the rearview mirrors: 1. Adjusting the rearview mirror button: It can be adjusted using the electric buttons inside the car, which are designed on the left side of the steering wheel, allowing adjustment of both left and right rearview mirrors. 2. Adjusting the center rearview mirror: Adjust the left and right positions so that the left edge of the mirror just cuts to the right ear of the image in the mirror, while the up and down positions place the distant horizon in the center of the mirror. The key to adjusting the center rearview mirror is to place the horizon in the middle and the ear on the left. Position the distant horizon horizontally along the center line of the central rearview mirror, then move left or right to place the image of the right ear just at the left edge of the mirror. 3. Adjusting the left rearview mirror: For the up and down positions, place the distant horizon in the center, and for the left and right positions, adjust so that the car body occupies 1/4 of the mirror's area. The key to adjusting the left rearview mirror is to place the horizon at the center line of the mirror and adjust the car's edge to occupy 1/4 of the mirror's image. 4. Adjusting the right rearview mirror: Since the driver's seat is on the left, when adjusting the up and down positions of the right rearview mirror, a larger area of the ground should be visible, occupying about 2/3 of the mirror. As for the left and right positions, adjust so that the car body occupies 1/4 of the mirror's area. The key to adjusting the right rearview mirror is to place the horizon at the 2/3 position of the mirror and adjust the car's edge to occupy 1/4 of the mirror's image.
19
4
Share

Why does the car make continuous abnormal noises when failing to start?

When the car fails to start and makes a continuous clicking sound, you can check by turning on the headlights or interior lights before attempting to start the car. Observe if there is any noticeable dimming of the lights during the starting process. If the lights significantly dim, it indicates insufficient battery voltage. The starting process consumes a large amount of current. When the battery cannot supply enough power, the starter struggles to bring the engine to the required starting speed, and the repeated engagement of the magnetic switch and starter relay produces the clicking sound. Reasons for the abnormal noise: Low or faulty car battery voltage. Improper daily use of the car can lead to battery discharge. Generally, the lifespan of a battery is between 3 to 5 years. If it exceeds this period, it should be replaced promptly; insufficient fuel supply in the fuel system, failing to meet the required air-fuel ratio for the engine. Check if there is enough fuel; excessive carbon buildup in the intake pipe, throttle valve, and idle speed motor, preventing the engine's air-fuel mixture from reaching the required ratio. Check if idling and poor driving conditions accelerate carbon buildup. Solutions: Prepare two jumper cables to connect with another car for a jump-start: First, turn off the engine of the dead car. The jumper cables must be connected in the correct order to avoid the risk of short circuits. Connect one end of the first cable to the positive terminal of the dead battery and the other end to the positive terminal of the live battery; take the second jumper cable, connect one end to the negative terminal of the live battery, and then connect the other end to the engine block or body of the dead car.
1
5
Share

What is the solution for Mercedes-Benz C200 transmission jerking?

Transmission gear programming settings are problematic. Therefore, the transmission control unit system needs to be reprogrammed; Internal contamination and impurities in the transmission prevent effective regulation of transmission oil pressure, necessitating a transmission fluid change; Poor transmission cooling leads to abnormal high temperatures. Inspect the internal valve body of the transmission for damage and replace it promptly; If the above measures fail to resolve the issue, visit a 4S dealership for vehicle inspection and repair to determine if engine replacement is required.
18
0
Share

Can I randomly select license plate numbers 5 times every day on 12123?

No. The license plate selection methods on 12123 include self-composed selection and random selection, which must be conducted within the published number segment range. When selecting numbers on the Traffic Management 12123 APP, each vehicle can compose up to 20 license plate numbers in total and randomly select numbers 5 times. For random selection, the time period is from 09:00 to 21:00 daily, with 5 attempts per day, 10 numbers per attempt, and a selection time of 90 seconds per batch. If you do not find a satisfactory license plate number through random selection, you can choose a license plate number by composing it yourself, of course, within the published number segment format. A total of 20 self-composed license plate numbers are allowed, with limited opportunities, so it is necessary to cherish and carefully compose and select. Each number segment contains 100 numbers, and the released license plate number segments are only available for random selection within 7 days. After 7 days, any remaining numbers in the segment will be randomly released by the system into the self-composed selection pool, providing vehicle owners with both self-composed and random selection options. In some areas, 12123 is still in trial operation, and there may be loopholes in the license plate selection service. Some vehicle owners are unjustly listed as suspects of abnormal number selection, in which case they need to go to the local vehicle management office to clear the suspicion. Additionally, after pre-selecting a license plate number on 12123, the vehicle must be registered within 15 working days. If the registration is not completed on time, the selected license plate number will become invalid, and the owner will be prohibited from pre-selecting license plate numbers online for two years.
18
5
Share

Does F mean full tank or E mean full tank?

F stands for a full tank, the full term is "FULL". The F on the car fuel gauge means FULL in English, representing a full tank, which can be translated as full or complete. E stands for Empty, indicating low fuel. Below are some precautions for fuel tank usage: Precaution 1 for fuel tank usage: Before a long-distance trip, the more fresh gasoline you have, the better the acceleration feels at high speeds. If the car is rarely driven, it is recommended to keep the fuel level low and not exceed the upper limit of the fuel tank when refueling. Precaution 2 for fuel tank usage: Do not use your phone at the gas station; leave it in the car or turn it off, and do not return to the car while refueling the vehicle.
13
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.