Is it okay to drive at 120 mph during the break-in period for an automatic transmission?

[McElena]

It is not advisable to drive at 120 mph during the break-in period for an automatic transmission. Here are some extended details on the topic: 1. Reason: A new car is in its break-in period, and during this time, it's crucial to control the driving speed, avoiding excessively high speeds. The recommended speed range is 50~80 km/h. The surfaces of various components in a new car are still relatively rough, with potential processing and assembly deviations and hidden issues. High-speed driving can exacerbate wear between parts or lead to safety incidents. 2. Break-in period precautions: When starting cold, allow the water temperature to warm up to above 40°C before moving off. When starting, apply the clutch and accelerator gently, avoiding revving the engine in neutral. Start in a low gear and gradually shift to higher gears, driving progressively. Avoid driving in a single gear for extended periods during the break-in period. Also, be sure to avoid low-gear high-speed or high-gear low-speed scenarios.