997 4S Tiptronic – too high consumption?

Servus dear Porsche fans! I have a more or less small problem with the consumption of my 911 convertible. That swallows in the city good 23 liters. Highway and longer distances, no problem, around 14 liters. But if you read in the city ranges of 280km, you get a bit stutzig… The car has run just about 3000km, I think the consumption would have had to settle down now slowly or? Two acquaintances of mine, both a S with manual Sch 5 liters difference due to all-wheel drive and Tiptronic? Also here in the forum I read only positive reports about the consumption of the 911. Everything is very strange… I’m actually very happy with the car, also find it beautiful, but I have the impression of having caught a Sunday car (had already problems with the side windows in the back, but was fixed). ig the joy. Of course, a sports car can swallow something neatly but why pay more than others with the same model… Now comes the facelift with direct injection and PDK (my dealer said in January, when I bought mine, that this is not to be expected before 2009, especially not with the four-wheel models), which should both reduce consumption again, the joy is clouded even more. Therefore, would I be happy about a few consumption values and opinions of you! first post so please don’t be too strict with me Thanks already in advance for every answer. PS: In this case a change would be possible? Don’t know about this at all but would also be happy about some information here.