Fluctuating Thermostat

Hi,

Went out in my 197 this morning sitting at 75 on the motorway and I noticed my thermostat was fluctuating slowly between just over the 2nd line and just under the third line. I would have said in the normal range, it didnt overheat and it didnt drop massively.

I was getting heat through the vents etc ok.

Outside temperature was 1C and I had the climate at 27C.

I would also say that the hottest setting of the climate (27C) almost isnt as hot as I would have expected it to be, I would expect it to be red hot and it wasnt although it certainly wasnt cold it was still pretty warm inside the car.

Is this normal?, ive only had the car a week so im not used to it yet.
 
Yeah, the thermostat sounds like it's stuck.

Will need changing and some new coolant.