Does Turning Off the Engine Save Fuel or Keeping It Running?

1 Answers
SimonDella
07/29/25 11:21am
Turning off the engine when parked saves more fuel than keeping it running. This is because a car consumes fuel when idling but not when the engine is off. Relevant details are as follows: 1. Traffic Lights: When waiting at a traffic light, you should judge the parking time based on the traffic signal timer. If the waiting time exceeds 1 minute, it is advisable to turn off the engine. Generally, the fuel consumed by idling a small car is more than the fuel required for a restart. 2. Lifespan: The engines of typical household cars are usually designed to withstand over 50,000 starts. Given the frequency of turning off the engine during parking in regular use, even after 10 years, the number of starts would still be far below 50,000. Therefore, reasonable engine shutdown during parking will not adversely affect the vehicle's engine or battery.
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