What is the break-in period for a new car in kilometers?

[OJohn]

Generally, the break-in period for a new car ranges from 1,000 to 3,000 kilometers. During this period, owners should properly control the vehicle speed, avoiding sudden braking and rapid acceleration. It is also recommended to warm up the engine before starting to ensure proper lubrication and prevent unnecessary malfunctions that could affect normal usage. As for the transmission, since it involves gear interaction, theoretically it is ready for normal operation right after leaving the factory. Moreover, modern lubricant technology has significantly improved compared to the past. However, many car owners still place great emphasis on the break-in period. Therefore, it is essential to operate the transmission correctly during this phase to avoid improper handling that could lead to wear on components such as automatic transmission bearings, planetary gears, and differentials, potentially causing early symptoms like unusual noises or failure to move.