Now you know why cars are reverting back to idiot lights for temperature rather than a sweeping needle.
Btw, on mercedes the temperature is bufferred now, it used to be live read fo eons, they have still retained the live read on amg cars though.
Another example is my own silly german suv,
If I cruise gently the coolant is maintained at 106c, if I boot it and the turbo is blowing hard and engine is making more than 70% power and torque the water pump speeds up and thermostat opens up to regulate coolant temperature to 92c. (Pump and tstat valve are fully electric)
Imagine if it had live gauge, owners would constantly lose their minds. My car doesnt have gauge at all.. and sedans with similar engine have engine oil temperature gauge rather than coolant gauge.
Sometimes its better to keep stuff hidden just to quiten the over dramatic allaama, sufi and other similar hazraat and khawateen also.