What is the normal water temperature for a BMW?

[DeJohn]

BMW's normal water temperature is 90 degrees Celsius, and the temperature will rise rapidly after the vehicle is started. Generally, after the car is started, the water temperature will rise quickly to 90 degrees Celsius and then stabilize, so it is best to start driving when the temperature reaches 90 degrees Celsius. The engine coolant temperature should not be too low or too high; it needs to be within a certain range. The normal temperature is indicated by the central position of the gauge at 90 degrees. After the vehicle is started, the antifreeze temperature rises quickly. Once the pointer reaches the central position, the heat exchange balances out, and the antifreeze temperature stops rising. Generally, it is optimal to start driving when the temperature reaches the middle position, which is also one of the reasons why it is necessary to warm up the car before driving. Common cooling system failures include coolant leaks, insufficient coolant, radiator fan malfunctions, and water pump failures. For optimal operation, a car engine requires a specific working temperature—neither too high nor too low—to ensure proper performance and efficiency. Conventional air cooling is often insufficient to dissipate the heat generated by the engine, which is why most car engines use a water-cooling system. The cooling system's role is to maintain the engine within the most favorable temperature range to enhance power output, reduce engine wear, and minimize fuel consumption. Both excessively high and low temperatures can adversely affect engine performance.