What does the 'circle a' symbol in cars represent?

[VanDaniella]

The 'circle a' symbol in cars represents the auto start-stop system. Pressing the 'circle a' button will cause the vehicle to remain stationary even after releasing the brake when stopped during driving, and it will automatically start moving when the accelerator is pressed. Below are the related details: Features of auto start-stop technology: With standard auto start-stop technology, the engine automatically shuts off when the car encounters a red light or traffic jam, and promptly restarts when the driver releases the brake pedal or presses the clutch (or accelerator pedal). More advanced auto start-stop systems also include brake energy recovery functionality, which can convert some of the energy from the braking process into electricity to charge the battery. Function of engine auto start-stop: It is used when the car is moving at low speeds or repeatedly stopping, automatically shutting off the engine to avoid unnecessary fuel consumption. It also reduces the car's idle time, which in turn decreases engine carbon buildup, benefiting both environmental protection and the engine's lifespan.