Yea as above, mine never goes over 1/4 driving, but after a run if I come to a stop and let the car idle it will got to ust under 3/4 up say the bottom of the "O" and the fan will cut in and bring it back down to 1/4 mark which is normal. If your fan does not come in at all after a drive and the car is left this could mean the car is running too cool, perhaps the thermostat has been removed?

Just a thought and maybe worth checking