What are the pros and cons of engine start-stop?

[OliviaLee]

Engine auto start-stop is a feature that automatically shuts off the engine when the vehicle comes to a temporary stop (e.g., at a red light) during driving. Below is a detailed introduction to the advantages and disadvantages of engine auto start-stop: 1. Advantages: It can reduce unnecessary fuel consumption, lower emissions, and improve fuel economy. In urban traffic, when waiting for traffic lights or during congestion, it minimizes engine idling time. Additionally, after the engine shuts off, the electrical system can replace the belt pulley to power the engine cooling fan and the vehicle's air conditioning. 2. Disadvantages: It requires more durable starters and batteries. Conventional starter designs allow for high working currents but for short durations. Frequent use of the starter can easily lead to overheating and damage, so starters with auto start-stop functionality must be significantly more durable than standard starters. Moreover, the increased number of battery charge and discharge cycles can also affect battery lifespan.