Is a 90°C water temperature normal for an Audi Q5?

[Miller]

Audi Q5's water temperature between 80°C and 90°C is considered normal. Reasons for overheating: One common cause of overheating is insufficient coolant, which often occurs when owners neglect timely top-ups. It's crucial to note that when adding coolant, you must use the same brand and model to prevent chemical reactions between different formulations that could render the antifreeze ineffective. Another possibility is leakage causing coolant loss - owners should carefully inspect for leaks and repair them promptly. Reasons for low temperature: Low water temperature may indicate cooling fan malfunction. Normally, fans only operate when temperature is high and remain inactive at normal or lower temperatures. Another potential cause is thermostat failure. The thermostat regulates coolant flow into the engine water jacket based on temperature readings. If defective, uncontrolled continuous coolant flow into the engine for cooling will cause temperature drops.