ColorMFA

I'm looking at the dashboard needle so it's not a problem but I would like to understand...

The arrow on the instrument panel shows 90 when the actual temperature is in the range of 75-107.

On VCDS 90°C
On ColorMFA 88°C (engine)
90°C (dashboard)

Where do you look in VCDS?
The dashboard sensor readings must be viewed in the dashboard. The readings of the motor sensor must be viewed in the motor.
A new original sensor usually has a discrepancy of 1-2 degrees (motor - dashboard). Over time, sensors degrade. The spread will be greater. If the difference between the motor and the dashboard is 5 degrees, you need to think about replacing the sensor. If the discrepancy is more than 10 degrees, the sensor must be replaced as soon as possible.