What are the differences between Auto Hold and Engine Start-Stop?
2 Answers
Auto Start-Stop and Auto Hold are two completely different functions that cannot be compared together, so there is no question of what the differences are. Here is relevant information about Auto Start-Stop and Auto Hold: 1. Auto Start-Stop means that when the vehicle comes to a stop and the brake is pressed firmly, the engine will shut off. Pressing the accelerator will automatically restart the engine. Auto Start-Stop is a feature developed by manufacturers to save fuel. According to authoritative tests, vehicles with Auto Start-Stop can save 10% to 15% of fuel annually. 2. Auto Hold means the vehicle can determine whether to automatically apply the brakes based on actual conditions. Auto Hold is an extension of the ESP function, controlled by ESP components. The Auto Hold button is usually located next to the electronic parking brake. On some vehicles, it is labeled "A," while others display "AUTOHOLD" directly. Pressing the Auto Hold button will show "ON," indicating that the function is activated. 3. Auto Hold can only operate properly when the seatbelt is fastened and the doors are closed. Pressing the accelerator, shifting gears, or turning the steering wheel will deactivate Auto Hold.
I've driven multiple cars and found that Auto Hold and Engine Start-Stop are two popular features with distinct differences. Auto Hold is primarily a safety assist: when you brake to a stop, the system automatically maintains wheel braking to prevent the car from rolling, which is especially convenient at traffic lights or on slopes. You don't need to keep your foot on the brake, saving effort and enhancing safety. Engine Start-Stop, on the other hand, is designed for fuel efficiency: when the car comes to a halt, such as at a red light, the engine automatically shuts off to save fuel; releasing the brake instantly restarts it. Their focuses differ: one targets vehicle stability, the other engine efficiency. When driving in the city, I often use them in combination, but Start-Stop automatically disables when the battery is low, whereas Auto Hold doesn't have this issue, making it more practical. Additionally, Auto Hold helps reduce rollaway accidents, while Start-Stop can lower fuel consumption and emissions, though its frequent restarts sometimes make driving noisier.
