What are the effects of start-stop on the engine?

[RyleeFitz]

Start-stop function has no impact on the engine. The following is an introduction to the automatic start-stop system: 1. The role of the automatic start-stop system: During traffic congestion or waiting at red lights, the engine can shut off, saving the fuel consumed by idling at that moment. When it's time to drive, the engine starts immediately. 2. More than 80% of car engine wear comes from the moment of cold start, while normal idling operation accounts for about 20%. The automatic start-stop system operates in a hot start environment, only temporarily shutting off the engine during brief stops. 3. The start-stop function stops the engine from working, but the oil system does not stop. Although the engine is not rotating, oil still flows inside the engine, ensuring better lubrication and engine protection when the car starts again.

[StSophie]

The start-stop system automatically shuts off the engine when parked and then restarts it, which indeed saves fuel but also brings some impacts. My car is equipped with this system, and after driving for a few years, I noticed that when the engine shuts off at a red light and restarts, the vibration is quite significant, making me feel like the wear has increased. A mechanic friend analyzed that frequent starts might burn out the starter motor, and the crankshaft bearings also endure extra pressure, especially wearing out quickly when lubrication is insufficient. This could potentially shorten the engine's lifespan, requiring more money for inspections or part replacements during maintenance. Although modern vehicle designs have reinforced related components, if you frequently use start-stop in urban areas over the long term, it's still advisable to perform simple monthly checks on battery voltage and engine fluids to prevent minor issues from becoming major problems—safety always comes first.

[SanDerek]

From a technical perspective, the impact of start-stop systems on engines should not be underestimated. Frequent starts and stops increase mechanical wear on the engine, particularly during the initial startup when the crankshaft and connecting rods experience significant impact with insufficient oil film formation, potentially exacerbating internal friction. However, modern systems have been improved with high-power starters and specialized lubrication mechanisms to mitigate these adverse effects. The fuel economy improvement is notable, reducing idle time by nearly 20%, which helps lower emissions. Based on my testing across different vehicle models, start-stop systems may affect cooling systems in hot weather conditions, but with proper maintenance, these impacts can be kept within acceptable limits. It's advisable to avoid repeated short-distance start-stop cycles while driving for optimal performance.

[LunaFitz]

The start-stop system offers significant environmental benefits by reducing idle emissions and helping to clean urban air, but the engine may pay a price. Each shutdown and restart increases the instantaneous load on the engine, which can lead to premature fatigue of certain components. In my daily driving experience, while the impact is generally mild, it becomes more noticeable during cold seasons or with frequent short-distance use. Regularly replacing high-quality engine oil and filters can mitigate the issue and prolong engine health. Overall, the advantages outweigh the disadvantages, making it suitable for green commuting.

[AdrianaFitz]

When the start-stop function is activated, the engine automatically shuts off and restarts, which indeed saves fuel, but it worsens the driving experience for me. Every time the engine stops at a red light, the slight shaking of the car is annoying. A friend told me that frequent start-stop cycles can cause significant damage to engine components such as spark plugs and starter motor brushes, potentially shortening the overall lifespan, especially in lower-end vehicles. It is recommended to develop a habit of enabling this function only when parked for more than a minute, combined with regular oil checks to reduce wear. This approach is both eco-friendly and car-friendly.