What Causes Abnormal Noise When Accelerating a Car?

Can I Buy a Car That Has Been in the Showroom for a Month?

Cars displayed in showrooms can certainly be purchased, often at a slightly discounted price, and the new car smell has mostly dissipated. Methods to distinguish between showroom cars and brand-new cars: 1. Check the production date: First, look at the car's production date. If it was manufactured a long time ago, it might be an inventory car. 2. Inspect the engine bay: Open the engine bay and check its cleanliness. A brand-new car that hasn't been driven much should have a tidy and pristine engine bay, with a smooth engine surface free of marks and clean wiring without dust accumulation. 3. Examine the exhaust pipe: Insert a finger into the exhaust pipe to see if it has turned black. 4. Check the tires: New tires usually have computer lines similar to paint and sidewall hair, which wears off after 50~100 kilometers. If the tire hair is completely worn off, it indicates abnormal mileage. 5. Look at the pedals: Compared to test-drive or display cars, brand-new cars have less mileage, so the accelerator, brake, or clutch pedals should appear very new. 6. Inspect the brake discs: Brake systems are inevitably used when driving, so higher mileage results in more noticeable wear on the brake discs, which will feel exceptionally smooth to the touch. 7. Check the undercarriage: Few people thoroughly inspect the undercarriage when picking up a car, but a brand-new car's undercarriage should be very clean. 8. Examine the dipstick: Start the cold engine, turn it off after 3 minutes, pull out the dipstick, and wipe it with a tissue to see if it turns black.

16

2

Share

What Does the Driving License Subject 1 Test Cover?

The "Regulations on the Application and Use of Motor Vehicle Driving Licenses" clearly stipulates the content of the Subject 1 test: road traffic safety laws, regulations, and rules; traffic signals and their meanings; knowledge of safe driving and civilized driving; safe driving knowledge under conditions such as highways, mountainous roads, bridges, tunnels, nighttime, adverse weather, and complex road conditions; emergency handling knowledge for situations like tire blowouts, steering failure, and brake failure; general structure of motor vehicles, common knowledge of main safety devices, basic knowledge of daily inspections and maintenance; basic knowledge of self-rescue and first aid after traffic accidents, as well as common hazardous materials. According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," the Subject 1 test consists of 100 questions, divided into single-choice questions and true/false questions, with each question worth 1 point, totaling 100 points. If 11 questions are answered incorrectly during the test, the system will automatically submit the paper and end the test. Subject 1, also known as the Subject 1 theory test or driver theory test, is part of the motor vehicle driving license assessment. The test content includes driving theory basics, road safety laws and regulations, local regulations, and related knowledge. The test is conducted on a computer, with a time limit of 45 minutes. Subject 1 test precautions: Candidates should pay attention to their attire, no slippers are allowed, electronic devices and bags are not permitted in the examination room, bring their ID card, and queue to enter the waiting hall. Observe the precautions and procedures on the large screen, and store personal belongings in a locker before entering the examination room. In the examination room, the identity verification area will assign a seat. After finding the seat, start the test, ensure the camera is aligned with you, and adhere to exam discipline. If you fail the first time, there is a retake opportunity on the same day. If you fail again, you will need to pay and reschedule. After the test, queue to collect the score report and sign it. Failure to sign will render the result invalid. There is no limit to the number of times you can reschedule the Subject 1 test. Each subject can be taken once, and if you fail, you can retake it once. If you do not attend the retake or fail the retake, the test will be terminated, and the applicant must reschedule the test. In contrast, Subject 2 and Subject 3 have only five test attempts each. Subject 2 and Subject 3 tests can be rescheduled after ten days. If you fail the Subject 3 safe and civilized driving knowledge test, the passed road driving skills test results remain valid. There are three subjects in the driving test: Subject 1, Subject 2, and Subject 3. Subject 1 refers to the road traffic safety laws, regulations, and related knowledge test; Subject 2 refers to the field driving skills test; Subject 3 is divided into two parts: road driving skills and safe and civilized driving knowledge test. The safe and civilized driving knowledge test is conducted after Subject 3, so it is commonly referred to as Subject 4. However, in official terms (i.e., the Ministry of Public Security Order No. 123), there is no such term as Subject 4.

16

4

Share

Can ETC continue to be used when changing cars but not license plates?

ETC cannot be used if the vehicle information it is bound to is inconsistent. Different vehicle models have different highway toll fees. According to the "Rules for the Use of Non-Stop Fast Pass Systems," when applying for ETC, the ETC card and OBU device are already bound to the vehicle, and the relevant vehicle information has been imported, forming a one-to-one correspondence. If you switch to a new car with a new license plate, you need to cancel the original ETC and reapply for the new car. If it's a new car with the old license plate, you can simply update the vehicle information at an offline service center. ETC is a non-stop electronic toll collection system. ETC lanes are set up for vehicles equipped with ETC onboard devices and use electronic tolling. The electronic toll collection system is an automatic toll system for highways or bridges. ETC's fee deduction principle: There will be one or more ETC lanes on the highway. Through microwave dedicated short-range communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at the toll station, computer networking technology is used to conduct background settlement with the bank, achieving the goal of vehicles not needing to stop at toll stations to pay tolls. All of this is based on the principle of passing first and deducting fees later. Benefits of installing ETC: Time-saving: Eliminates the hassle of waiting in line; Green and eco-friendly: Low-carbon, as vehicles pass through toll stations without stopping, reducing noise and exhaust emissions and minimizing pollution; Reduced wear and tear: Saves costs by reducing the frequency of vehicle starts and brakes, lowering wear and fuel consumption; Improved efficiency: The theoretical efficiency of ETC lanes can be increased by 2-3 times or more, making traditional ETC updates faster and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous. More policy support: The State Council explicitly stated in the "13th Five-Year Plan for the Development of a Modern Comprehensive Transportation System" that "by 2020, intercity transportation smart cards will be basically realized in key city clusters, and the proportion of vehicles equipped with ETC will significantly increase." It also clearly set the goal in the "13th Five-Year" comprehensive transportation development indicators that "by 2020, the ETC usage rate for road passenger vehicles will reach 50%." More future possibilities: In addition to continuously improving the convenience of ETC installation and usage and the ETC usage rate for passenger vehicles, the future will also promote the use of ETC for trucks and explore the deep integration of the ETC system with vehicle-to-vehicle communication, vehicle-to-infrastructure coordination, and other smart transportation development directions, providing comprehensive travel services for car owners. This means more application scenarios will support ETC applications. ETC usage precautions: The ETC transaction sensing range is 8 meters. When encountering a vehicle in front that has stopped, to prevent the ETC device of the front vehicle from malfunctioning or not having an ETC device at all, maintain a distance of more than 10 meters from the front vehicle to avoid automatic sensing and paying the toll for the front vehicle. The recognition speed for ETC lane passage is 20 km/h. If the speed is too fast, the vehicle device information cannot be read, which will also result in a failed fee deduction. Unauthorized removal or movement of the OBU device, or detachment or loosening of the ETC electronic tag, will cause the electronic tag to fail. It can be sent to the bank where the ETC card was issued or the highway service center for testing. If the loosening or detachment is not due to human factors, it only needs to be reactivated. When using a debit card bound to ETC, insufficient balance will also result in a failed fee deduction. Follow the guidance of on-site staff to use the manual MTC lane and pass by paying cash or swiping a card. Excessive thickness of the car windshield can cause poor sensing. This is especially important for vehicles that have had their windshields replaced after accidents or for those who have modified their front windshields.

1

Share

What Does the Driving License Subject 1 Test Cover?

The "Regulations on the Application and Use of Motor Vehicle Driving Licenses" clearly stipulates the content of the Subject 1 test: road traffic safety laws, regulations, and rules; traffic signals and their meanings; knowledge of safe driving and civilized driving; safe driving knowledge under conditions such as highways, mountainous roads, bridges, tunnels, nighttime, adverse weather, and complex road conditions; emergency handling knowledge in situations like tire blowouts, steering failure, and brake failure; general structure of motor vehicles, common knowledge of main safety devices, basic knowledge of daily inspection and maintenance; basic knowledge of self-rescue and first aid after traffic accidents, as well as common hazardous materials. According to the "Regulations on the Application and Use of Motor Vehicle Driving Licenses," the Subject 1 test consists of 100 questions, divided into single-choice and true/false questions, with each question worth 1 point, totaling 100 points. If 11 questions are answered incorrectly during the test, the system will automatically submit the test and end it. Subject 1, also known as the Subject 1 theory test or driver theory test, is part of the motor vehicle driving license assessment. The test content includes driving theory basics, road safety laws and regulations, local regulations, and related knowledge. The test format is computer-based, with a time limit of 45 minutes. Subject 1 test precautions: During the test, students should pay attention to their attire—no slippers are allowed, and electronic devices and bags are prohibited in the examination room. Bring your ID card and queue to enter the waiting hall. Observe the precautions and procedures on the large screen, and store personal belongings in a locker before entering the examination room. In the examination room, the identity verification area will assign seats. After finding your seat, begin the test. Ensure the camera is aligned with you and adhere to test discipline. If you fail the first time, there is a retake opportunity on the same day. If you fail again, you must pay to reschedule. After the test, queue to collect your score report and sign it. Failure to sign renders the test invalid. There is no limit to the number of times you can schedule the Subject 1 test. Each subject test can be retaken once if failed. If you do not attend the retake or fail the retake, the test is terminated, and the applicant must reschedule. In contrast, Subject 2 and Subject 3 have only five test attempts each, and tests must be scheduled at least ten days apart. If the Subject 3 safe and civilized driving theory test is failed, the passed road driving skills test scores remain valid. Steps to schedule the Subject 1 test online: Open the Comprehensive Traffic Safety Service Management Platform and select your province or city. Choose "Test Scheduling." Click "Register Now." Fill in user information: Enter your ID number and the mobile phone number used during registration, as shown: Select user type: Choose "First-time applicant for a motor vehicle driving license." Enter the SMS verification code, as shown: Read and agree to the terms and conditions, then click "Next." Confirm the information is correct and click "Next," as shown: Test scheduling: Select the test subject, test venue, and scheduling start and end time. Enter the image verification code and click "Next," as shown: Choose the date and session: The system offers two scheduling modes—self-selecting test sessions or allowing the system to arrange the test, as shown: If you choose the self-selecting mode, you can select one or multiple sessions. If you choose the system-arranged mode, the system will automatically match suitable test sessions within your selected time frame. After selection, click "Next" to confirm submission. Confirm submission and verify the information again. If correct, click "Complete." Upon successful submission, the system generates a transaction number. The system will arrange the test on the scheduled result announcement date and publish the scheduling result. There are three subjects in the driving test: Subject 1, Subject 2, and Subject 3. Subject 1 refers to the road traffic safety laws, regulations, and related knowledge test. Subject 2 refers to the field driving skills test. Subject 3 is divided into two parts: road driving skills and safe and civilized driving theory test. The safe and civilized driving theory test is conducted after Subject 3, so it is commonly referred to as Subject 4. However, the official term (as per the Ministry of Public Security Order No. 123) does not include "Subject 4."

13

2

Share

What are the reasons why the Changan Oshan X7 won't start?

Specific reasons are introduced as follows: 1. Conditions not met: The general conditions are pressing the start-stop function switch, driving at a speed of over 15 km/h for more than three minutes, and then stepping on the brake when the gear is in D position. At this time, the start-stop function is activated. 2. Insufficient battery power: Because there are high-power electrical appliances in the car or the battery power is insufficient, the system detects that the battery power is not enough to restart the engine, so the start-stop function is automatically turned off. 3. Faulty related components: Because there is a fault in the related components of the start-stop function, the start-stop function cannot be used.

13

1

Share

How to Determine Whether Tires Need Replacement

Methods to determine whether tires need replacement: 1. Check the tread depth, which is a crucial indicator for assessing tire replacement necessity; 2. Examine the degree of tire aging. The rubber material of tires has a shelf life of three years. Beyond this period, numerous small cracks will appear on the tire sidewalls - more cracks indicate more severe aging, in which case replacement is recommended. Automotive tires are one of the vehicle's critical components, directly contacting the road surface and working with the suspension system to absorb shocks during driving. They ensure good ride comfort and smooth operation, maintain excellent traction between wheels and road surface, enhance the vehicle's traction, braking, and off-road capability, while bearing the vehicle's weight.

17

3

Share

What Causes Abnormal Noise When Accelerating a Car?

Can I Buy a Car That Has Been in the Showroom for a Month?

What Does the Driving License Subject 1 Test Cover?

Can ETC continue to be used when changing cars but not license plates?

What Does the Driving License Subject 1 Test Cover?

What are the reasons why the Changan Oshan X7 won't start?

How to Determine Whether Tires Need Replacement

How to Set the Time on an Eighth-Generation Accord?

How to Check if the ETC in the Car is Functioning Properly?

How long does it take to drive 10km on the highway?

What is the comprehensive fuel consumption of the X-Trail?