What are the pros and cons of auto start-stop function?

2 Answers
Jocelyn
07/29/25 7:39am
The advantages and disadvantages of the auto start-stop system are as follows: 1. Advantages – Fuel saving; Whether waiting at a red light or in traffic congestion, the auto start-stop technology can automatically turn off the engine when the vehicle stops, achieving the purpose of saving fuel. 2. Disadvantages – Increased vehicle costs; Cars equipped with the auto start-stop system are several thousand dollars more expensive than those without. In addition, due to the frequent repeated starting and stopping of the engine, there are higher requirements for oil quality, further increasing maintenance costs. More information about auto start-stop is as follows: 1. Definition of auto start-stop: A system that can automatically control engine shutdown and ignition, called STOP&START in English, abbreviated as STT. 2. Function of auto start-stop: Vehicles equipped with engine auto start-stop technology will automatically shut down the engine when temporarily stopping during driving. When it is necessary to continue moving forward, the system will automatically restart the engine.
Was this review help?
4
2
Share
DeSavannah
08/12/25 10:56am
As a city commuter who drives to work every day in heavy traffic, the auto start-stop feature has become my little fuel-saving assistant. The advantages are obvious: the engine automatically shuts off at red lights, saving a significant amount of fuel—based on my experience, it can reduce monthly fuel costs by dozens of dollars. It also cuts down on exhaust emissions, making it more environmentally friendly, especially in big cities with poor air quality. However, the drawbacks shouldn't be ignored: the slight vibration when the engine restarts is annoying, and sometimes the delayed start affects acceleration response. The repeated starts and stops in traffic jams can be particularly frustrating. Long-term use may also increase battery load and shorten component lifespan, requiring more frequent maintenance. Overall, this feature is quite practical during peak hours, but it's advisable to manually turn it off in heavy traffic to avoid additional costs.
Was this review help?
17
3
Share
Expand All
More Forum Discussions

Why is the BMW 730 one-button start not responding?

BMW 730 one-button start not responding reasons are as follows: Key reasons: For example, the key battery is dead, or the key's radio waves are being interfered with. If you frequently place the car key near electronic devices such as mobile phones, computers, or TVs, it can easily cause interference with the key's low-intensity radio waves, making it difficult for the car's sensor to detect the key. In this case, the one-button start will not respond. Solution: Try replacing the key battery first. Gear not in P position: Most car models today cannot start if the gear is not in P position. This is a safety feature designed by manufacturers to prevent starting the car when the gear is in D or R position. Solution: Shift the gear to P position and try starting again. Brake not pressed: Many cars' one-button start requires pressing the brake to start the engine. If the brake is not pressed, it only connects the car's electrical circuits, which is also a safety feature. Solution: Press the brake while starting. Car itself problems: If the issue is related to the car itself, the scope of possible causes is broader. It is recommended to visit a 4S shop for inspection.
1
4
Share

What are the causes of idle vibration in an Audi A5?

Audi A5 idle vibration causes and solutions: Ignition system issues: If there is a malfunction in the car's ignition system, it can lead to poor ignition system performance, improper spark plug firing, and other problems, resulting in unstable idle vibration. Solution: Check the condition of the spark plugs, high-voltage wires, and ignition coils to see if there is excessive carbon buildup on the spark plugs. If found, clean or replace the spark plugs immediately. Poor fuel quality: Poor fuel quality can damage engine performance, leading to idle vibration issues. Solution: Clean the car's throttle body promptly, which can generally resolve common faults. Excessive carbon buildup or aging in the engine: Excessive carbon buildup inside the engine can cause the gasoline sprayed by the cold start injector to be largely absorbed by the carbon deposits, resulting in an overly lean air-fuel mixture during cold starts, making it difficult to start and causing unstable oil pressure. Solution: Check the oil pressure and replace components if necessary.
2
3
Share

What to Do When the Engine Idle Speed is Unstable and Fluctuates?

Here are the specific methods to deal with unstable idle speed that fluctuates and lacks acceleration power: 1. The correct idle speed of an electronic fuel injection engine is ensured by the electronic idle speed control valve. The ECU adjusts the idle speed control valve based on signals such as engine speed, temperature, throttle switch, and air conditioning. 2. When the idle speed is lower than the set value, the computer commands the idle speed control valve to open the intake bypass channel or directly increase the throttle opening to increase the intake air volume, thereby raising the engine idle speed. 3. When the idle speed is higher than the set value, the computer commands the idle speed control valve to close the intake bypass channel, reducing the intake air volume and lowering the engine speed. Due to oil contamination, carbon deposits causing sluggish or stuck movement of the idle speed control valve, or the throttle not closing properly, the ECU cannot correctly adjust the engine idle speed, leading to unstable idle speed. 4. Diagnostic method: Check the operation sound of the idle speed control valve. If there is no sound, the idle speed control valve is faulty. Troubleshooting involves cleaning or replacing the idle speed control valve and using a dedicated decoder to perform a basic setting of the idle speed.
12
2
Share

Will the vehicle be impounded if the inspection expires?

Will the vehicle be impounded if the inspection expires? The vehicle will be impounded if the inspection expires. Below is relevant information about vehicle inspection: 1. Relevant laws: Article 49 of the Regulations on the Registration of Motor Vehicles stipulates that the owner of a motor vehicle may apply for an inspection compliance mark from the vehicle management office at the place of registration within three months before the expiration of the motor vehicle inspection validity period. 2. Consequences of overdue motor vehicle inspection: If a motor vehicle continues to be driven on the road without undergoing inspection after the expiration date, it may be seized by the traffic police department, and the owner may face a fine of 200 yuan and a deduction of 3 points. If a motor vehicle fails to obtain an inspection compliance mark within three consecutive inspection cycles, it will be subject to mandatory scrapping. Additionally, failure to undergo inspection on time may result in fines due to the inability to provide a valid inspection certificate, and in the event of a traffic accident, the insurance company may refuse to compensate.
5
4
Share

Where is the best position for car blind spot mirrors?

Car blind spot mirrors can generally be installed on the lower outer corner of the car's side mirrors or the upper outer corner, with the mirror surface adjusted slightly downward. They are mainly useful for viewing parking spaces and the ground while reversing, eliminating the need to constantly adjust the rearview mirrors. Common installation positions include the upper left, lower left, and lower right corners. The difference between the upper left and lower left positions is not significant. Most people choose to install them on the lower left or lower right positions. Introduction to car blind spot mirrors: 1. Function of car blind spot mirrors: Blind spot mirrors allow the driver in the cabin to better observe the side of the vehicle and the rear wheels, expanding the driver's field of vision and reducing blind spots. These mirrors are inexpensive and very easy to install. 2. Installation on the lower left: Advantages: Increases the visible range of the rearview mirror. Disadvantages: It definitely obstructs and interferes with the rearview mirror's view. 3. Installation on the lower right: Advantages: Provides a clear view of the distance between the rear wheels and the curb, which is very useful for roadside parking, driving on narrow rural roads, and reversing. It hardly obstructs or interferes with the rearview mirror's view. Disadvantages: It does not increase the visible range of the rearview mirror.
16
4
Share

How often should the transmission fluid in a Lincoln MKC be changed?

Under normal driving conditions, the transmission fluid should be changed every 2 years or 60,000 kilometers. For specific details, please refer to the vehicle's maintenance manual. If the transmission fluid is not changed for an extended period, its lubricating effectiveness will diminish, leading to inadequate lubrication. This can affect the operation of the hydraulic system and cause unstable pressure in the car's transmission. Below is an introduction to the methods for changing transmission fluid: 1. Gravity Drain: This method works on the same principle as changing engine oil. Loosen the bolt on the oil pan and allow the transmission fluid to drain out under gravity. While simple, this method does not completely remove all the old fluid, as residual fluid may remain in recesses and dead corners. 2. Machine Flush: New transmission fluid is stored in a flushing machine, which is connected to the transmission via pipes. The new fluid pushes out the old fluid under the action of the machine. This method cleans the fluid passages more thoroughly. The more new fluid used, the cleaner the system becomes. A machine flush typically requires about 12 liters or more of new transmission fluid, making it more expensive. The process also takes longer, usually around an hour. 3. Oil Pan Removal: This method cleans the system from the root, ensuring a more thorough cleaning. Additionally, the transmission fluid filter can be cleaned during this process.
15
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.