hmm, mine seems ok.

I park on the streets and in the morning the windows (outside) are usually 'fogged up' but the rear demister does a good job in clearing it.

As for the front windows, i use either the spray and wipers or a piece of cloth to clear it.

Regards to interior fogging up, only happens when it's really cold and I don't open the windows or the aircon, but that's quite normal for any car.