I was told by a good mechanic that the Alfa TS's tend to be around 80 degrees when they're fully up to temp. This can take a good ten minutes, even if its working hard. Mine usually stays around 70 or so, depending on the weather outside (I've only had it for a month or so, so only tried it in Scotland's rainy post winter so far), but gets up to 80 when I start to put my foot down for a while. Sitting at a constant speed in a high gear, with a good air flow, I suppose it's not going to be struggling much. I guess it depends on the engine type, your local weather/temp and how hard you're driving it.
Doeas anyone else's car temp stay as low as that in a good heat (30 degrees)?