Can a Sedan with Scissor Doors Pass the Annual Inspection?

2 Answers
MacReagan
07/29/25 7:47am
It can pass the annual inspection if all procedures are completed. However, if the modification is not properly documented and the change registration is not applied for within 10 days after the modification, it will fail the inspection. Prohibited modifications include: 1. Wide Body Kits: Supercar-style wide body kits are only suitable for super highways. Most non-original wide body kits are hard to find replacement parts for, and in case of a collision, they can pose significant risks to life safety. 2. Hood Modifications: Original hoods are designed to bend and deform in stages during a collision, whereas modified hoods may pierce through the windshield, causing accidents. 3. Mushroom Head Exhaust Pipes: Mushroom head exhaust pipes reduce intake inertia, leading to decreased low-speed torque, increased fuel consumption, and poor low-speed performance. 4. Large Exhaust Systems: These reduce exhaust backpressure, resulting in decreased low-speed torque. Additionally, the engine exhaust valves are prone to burning out due to excessively high temperatures.
Was this review help?
10
3
Share
McRylee
08/12/25 11:03am
I've been repairing cars for over a decade and have seen many owners install scissor doors, thinking it's just about changing the door opening method. However, this modification actually has a significant impact on annual inspections. During inspections, officials check if the vehicle structure meets original factory standards. Scissor door modifications alter the hinge and door lock systems, which may not have passed safety certifications and can easily be deemed illegal modifications. If you make such changes without filing them with the vehicle management office, there's a high chance you'll fail the annual inspection, as this alters the requirements for body strength and reduces collision protection. I advise owners not to pursue temporary flashiness without first understanding the regulations, or else they'll have to spend money reverting the modifications or face penalties. Similar modifications like exhaust upgrades or suspension changes carry equally high risks.
Was this review help?
8
2
Share
Expand All
More Forum Discussions

Is It a Traffic Violation to Drive Without Wearing a Shirt?

Driving without wearing a shirt is not considered a traffic violation. Below is relevant information: Definition: A traffic violation refers to a motor vehicle's act of violating the Road Traffic Safety Law and traffic management regulations. Consequences: Penalties for traffic violations include warnings, fines (vehicle impoundment), temporary suspension of driver's license, revocation of driver's license, cancellation of driver's license, administrative detention, and criminal liability for acts constituting a crime. Inquiry methods: Visit the office halls of traffic police branches in various cities, districts, and counties to inquire through touch query terminals; call the voice inquiry hotline; or send a text message to inquire about violations.
17
1
Share

Can Motorcycles Use Elevated Roads?

Motorcycles are generally not allowed on elevated roads, but they can use elevated interchanges where motorcycle access is not prohibited. Here are the relevant details: Regulations: The 'Road Traffic Safety Law of the People's Republic of China' does not prohibit motorcycles from using highways. On the contrary, it explicitly stipulates special regulations for motorcycles on highways, which essentially require speeds between 60km/h and 80km/h. Precautions: Riders must wear safety helmets, cannot carry cargo or passengers, and must only use the rightmost lane.
5
4
Share

What type of engine oil should be used for China VI vehicles?

China VI vehicles use 5W30 semi-synthetic engine oil. 5W30 is a four-stroke engine oil, representing the viscosity value of the engine oil. In 5W30, the 'W' stands for winter, and the number before 'W' indicates the oil's flow performance at low temperatures. The smaller this number, the better the starting performance in cold conditions. The number after 'W' represents the oil's stability at high temperatures, with a higher number indicating better stability. The '5' means the oil can withstand external temperatures as low as -30°C, while '30' indicates that the oil's kinematic viscosity standard at 100°C is 30. Classification of engine oil: Automotive engine oils are divided into three types: mineral oil, semi-synthetic oil, and fully synthetic oil. Mineral oil is only suitable for low-end vehicles or some new cars. Semi-synthetic oil is a blend of conventional oil and synthetic base oil, generally suitable for non-turbocharged mid-range models. Fully synthetic oil has excellent resistance to high-temperature volatilization and deposits, making it suitable for high-temperature, high-speed, high-compression ratio engines, such as turbocharged engines. Functions of engine oil: Lubrication to reduce wear—there is rapid relative sliding between the engine's pistons and cylinders, as well as between the main shaft and bearings, which can easily cause wear. High-quality engine oil forms a sufficiently thick oil film between these sliding surfaces, separating the moving parts and reducing wear. Cooling—engine oil carries heat back to the oil pan and dissipates it into the air, helping the radiator cool the engine. Cleaning—good engine oil can circulate carbon deposits, sludge, and worn metal particles from engine parts back to the oil pan, flushing away contaminants generated on the working surfaces through the flow of the lubricating oil.
15
2
Share

Will stalling at a traffic light result in penalty points?

Stalling at a traffic light will not result in penalty points. During normal driving, stalling when the traffic light is red does not incur penalty points, and even stalling when the light is green will not lead to penalty points. However, if the vehicle crosses the solid line while the light is red, penalty points will be imposed. Below is relevant information: Introduction: Traffic lights are signals that direct traffic flow, typically consisting of red, green, and yellow lights. A red light indicates prohibition of passage, a green light permits passage, and a yellow light serves as a warning. Classification: Traffic lights include motor vehicle signals, non-motor vehicle signals, pedestrian crossing signals, directional indicator lights (arrow signals), lane signals, flashing warning signals, and railway crossing signals.
7
2
Share

What Type of Driver's License is Required for Agricultural Tricycles?

To operate an agricultural tricycle, a C4 or higher driver's license is required. Below are relevant details: Penalties: For unregistered and unlicensed agricultural tricycles or motorcycles discovered by public security authorities, the first instance involves registration, publicity, education, and warning; the second instance entails vehicle seizure by traffic management departments to urge drivers or owners to obtain proper licensing. Definition of Driver's License: A motor vehicle driver's license is a legal document issued by administrative authorities after passing examinations, permitting qualified individuals who have studied and mastered traffic regulations and driving skills to operate specific types of motor vehicles.
1
0
Share

Which is More Difficult: Subject One or Subject Four?

Both subjects are theoretical exams. Subject One focuses on driving knowledge, while Subject Four emphasizes safety knowledge. The questions in Subject Four often do not require rote memorization; correct answers can be deduced through practical reasoning. Subject One, however, includes more memorization-based content such as traffic police gestures and road sign markings. From this perspective, Subject One is relatively more difficult. Exam content for Subject One: Basic knowledge of motor vehicles; laws, regulations, and road traffic signals; fundamentals of safe and civilized driving; basic knowledge related to motor vehicle driving operations. Exam content for Subject Four: Requirements for safe and civilized driving operations; safe driving knowledge under adverse weather and complex road conditions; emergency handling methods for situations like tire blowouts; and post-accident handling knowledge.
16
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.