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What are the disadvantages of auto start-stop?

Auto start-stop technology, also known as idle-stop or stop-start, is a feature in modern vehicles that automatically shuts off the engine when the car is stationary, such as at a red light or in heavy traffic, and then restarts it when the driver is ready to move again. While this technology can improve fuel efficiency and reduce emissions, it also comes with several disadvantages that drivers should be aware of.


Potential Battery Drain


The frequent starting and stopping of the engine can put a strain on the vehicle's battery, as the battery is responsible for powering the starter motor and other electrical components during the restart process. This can lead to a faster depletion of the battery, potentially requiring more frequent battery replacements or the need for a more powerful battery to handle the increased demand.


Increased Wear and Tear


The repeated starting and stopping of the engine can also lead to increased wear and tear on various engine components, such as the starter motor, alternator, and fuel system. This can result in more frequent maintenance and repairs, potentially increasing the overall cost of ownership for the vehicle.


Reduced Responsiveness


When the engine is automatically shut off, there can be a noticeable delay before it restarts, which can affect the vehicle's responsiveness and feel. This can be particularly noticeable when trying to accelerate quickly from a stop, as the driver may experience a brief lag before the engine fully engages.


Potential Safety Concerns


In certain situations, such as when merging onto a highway or making a quick maneuver, the auto start-stop feature may not be desirable, as the delay in engine restart could potentially compromise the driver's ability to respond quickly to changing road conditions. This can raise safety concerns, especially for drivers who are not familiar with the technology.


Comfort and Convenience


Some drivers may find the constant starting and stopping of the engine to be disruptive or uncomfortable, particularly in hot or cold weather when the climate control system may not be functioning as effectively. Additionally, the auto start-stop feature may not be suitable for drivers who frequently idle their vehicles, such as those who use their cars for work or who are stuck in heavy traffic for extended periods.


While auto start-stop technology can provide benefits in terms of fuel efficiency and emissions reduction, it is important for drivers to be aware of the potential drawbacks and to consider whether the technology is a good fit for their driving habits and needs.

How much does it cost to replace a start-stop battery?


On average, the cost of a stop-start battery can range from $100 to $300 or more, depending on different factors.



How long does a stop-start battery last?


3 to 5 years
This type of battery lasts on average 3 to 5 years. AGM batteries are ideal for powerful vehicles with stop/start systems. They typically have a longer lifespan than EFB batteries. The EFB battery is for simpler stop/start electric systems with smaller engines.



Does auto start-stop wear out the starter faster?


Auto Start/Stop technology requires a uniquely made starter. Many people wonder if a start/stop system will wear out a starter. The easy answer is, “No.” Starters in vehicles equipped with this new tech are made differently. These starters are optimized to turn the motor more slowly, which increases its longevity.



Can I replace a start-stop battery myself?


Can I change a start-stop battery myself? You shouldn't. Why battery replacement is for experts.



Does auto start-stop hurt your starter?


Auto Start/Stop technology requires a uniquely made starter. Many people wonder if a start/stop system will wear out a starter. The easy answer is, “No.” Starters in vehicles equipped with this new tech are made differently. These starters are optimized to turn the motor more slowly, which increases its longevity.



Should I disable auto stop-start?


Conclusion: Disabling the auto start-stop feature can lead to higher fuel consumption and emissions while potentially reducing engine wear from frequent starts. The decision to disable it often comes down to personal preference and driving conditions.



Does auto start-stop drain your battery?


Vehicles with Stop Start systems require 5 to 10 times more engine starts when compared to their conventional counterparts. This puts a lot of strain on the vehicle's battery.



Does auto stop-start wear out starter?


Auto Start/Stop technology requires a uniquely made starter. Many people wonder if a start/stop system will wear out a starter. The easy answer is, “No.” Starters in vehicles equipped with this new tech are made differently. These starters are optimized to turn the motor more slowly, which increases its longevity.



Can auto start cause problems?


Engine Issues: In some cases, remote starters can cause issues with the engine if they engage while the vehicle is in gear or if there are problems with the ignition system. User Error: Improper use, such as starting the car while it's in gear, can lead to accidents or mechanical issues.



What is the problem with auto start-stop?


Here are some potential drawbacks: Battery and Starter Wear: Frequent stopping and starting can put additional strain on the battery and starter motor, potentially leading to increased wear and a shorter lifespan for these components.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.