What is the Method to Differentiate Between National IV and National V Vehicles?

[VonMaximus]

National IV and National V vehicles can be differentiated by: 1. Checking the corresponding standard number on the vehicle conformity certificate, where National IV's emission standard number is GB18352.3-2005, and National V's is GB18352.5-2013; 2. Reviewing the environmental information accompanying the vehicle list; 3. Checking the posted automobile fuel consumption label; 4. Examining the vehicle qualification certificate; 5. Querying the vehicle's emission standard on the Motor Vehicle Environmental Protection Website. Vehicle emission standards refer to regulations on the content of harmful gases emitted from vehicle exhaust, including carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter, carbon smoke, etc.

[DelNathan]

When I first bought a car, I also researched how to distinguish between China IV and China V vehicles. Simply put, the China V emission standards are stricter than China IV, resulting in less pollution. The direct method is to check the environmental protection label section on the vehicle registration certificate or driving license—it will say 'China IV' for China IV or 'China V' for China V. The production date is a good clue; for example, most cars produced before 2017 are China IV, while those after 2018 are mostly China V. You can also check the VIN on relevant websites—environmental departments provide free online tools for queries. Pay attention to the model as well; newer models like the 2019 Toyota Corolla are all China V. Regarding traffic restrictions, cities like Beijing and Shanghai prohibit China IV and below from entering urban areas, so always check before buying a used car to avoid overspending. In daily driving, there’s no noticeable difference, but choosing China V is better for the environment.

[SanBethany]

For those who frequently engage with vehicles, distinguishing between National IV and National V standards isn't difficult. The most accurate method is to check the environmental certification label affixed to the door or rear window glass. National V systems are equipped with particulate filters and advanced catalytic converters, resulting in lower emission values. The production year 2017 serves as a dividing line—older models are typically National IV, while newer ones are National V. Using a diagnostic tool to scan the OBD interface and read the data stream can reveal differences in emission parameters. For maintenance, National V diesel vehicles require urea fluid; otherwise, they are prone to triggering alarms. A simpler approach is to check new vehicle configurations, as National V models feature additional emission inspection lights. When purchasing a car, be cautious not to be misled into choosing older models marketed as new standard vehicles for better cost-performance.

[DeMackenzie]

I care about environmental protection and know that China 5 reduces more harmful exhaust emissions such as nitrogen oxides compared to China 4. The difference can be identified by the production date—new cars after 2018 are mostly labeled as China 5. Check the compliance certificate: if it states the national standard GB18352.5, it's China 5; GB18352.4 means China 4. Choosing a China 5 car helps reduce urban smog and protects air quality for better health. You can quickly verify the standard by entering the VIN on environmental protection websites to avoid being misled by sellers. A simple way is to check model generations—for example, older Honda CR-V models are China 4, while newer ones are all upgraded. The driving experience may be similar, but the environmental impact differs.

[Lance]

Driving for decades, I've seen upgrades from China IV to China V standards. The easiest way is to check the environmental protection seal on the registration book for the emission standard number. From experience, older car engines are slightly noisier, while China V optimized models run quieter. Over 80% of vehicles produced after 2017 meet China V standards. With policies changing rapidly, young drivers should stay informed to avoid traffic restrictions and fines. The used car market is mixed—always verify vehicle management records carefully. China V exhaust pipes are more enclosed, emitting less smoke. Learning to check VIN codes is a simple skill that saves money and ensures safety.

[OEmiliano]

Checking National IV and National V vehicles with an APP is super easy. Download the Autohome tool, enter the VIN, and get instant results. For vehicles produced after 2018, new cars are all labeled with National V tags and show no wear. Related smart car dashboards have emission lights, and the National V system is more sensitive to alerts. When buying a car, apps like Guazi used car valuation also consider the standard, so don’t waste money on the wrong model. A friend was once deceived into buying a National IV car advertised as National V, leading to city access restrictions and many troubles. Technology helps clarify and ensures you choose the right eco-friendly car, saving you hassle and worry.