Can the car overheat without the gauge showing hot?

Yes, a car can overheat without the gauge indicating hot. This can occur if the temperature sensor is malfunctioning or if there is a problem with the gauge itself, preventing accurate readings. Additionally, issues such as a coolant leak, blocked radiator, or failing water pump can lead to overheating even if the gauge does not reflect it. Therefore, it's important to monitor other signs of overheating, such as steam or unusual engine noises, and to perform regular maintenance.