Does Turning Off the Engine at Red Lights Save Fuel?

[Paisley]

Turning off the engine at red lights does not save fuel. With the performance of modern engines, fuel consumption during idling is not very high—generally, idling for an hour consumes less than 1L of fuel. However, starting the engine also creates a peak in fuel consumption. Research by experts shows that the extra fuel consumed in one cold start is enough for the car to travel 3 kilometers, while the extra fuel consumed in one warm start is enough for the car to travel 1 kilometer. The impact of each engine start: 1. Negative effects on the engine and battery: Each start affects the lifespan of the engine and battery. The moment of starting causes more wear on the engine than normal operation and also easily leads to carbon buildup. 2. Energy and fuel conversion: The energy consumed by the battery during one start requires about 20 minutes of stable vehicle operation to replenish, and this energy must be compensated for by burning additional fuel.