Temperature

Hey everyone. I just want to know about the temperature for my TT. I just repaired the air-cond for my car today. When i was driving back to uni, my temperature was around 94 to 98 with the air-cond on. Before this, i was driving the car without the air-cond and the temperature gauge usually shows around 78 to 80. So, i just want to know the optimum level of temperature for the car, driving with the air-cond on in this hot weather (30 to 40 degree celcius)?
Could you all help me with this?

 

Don't be too concerned...94-98 is ok for a 30-40 degree day with air-con on.

 

Highest level

So what is the highest safe temperature level you can get to?

 

Engines are most efficient in the low 90's. I would be concerned at anything 100+.