Originally Posted by
siberslava
I've never known an instance of fraud from the official airport taxis. To Sultanahmet it should be about 50 lira tops (20 euro). On the other hand, I wouldn't take a taxi from the Sultanahmet area (those do have a tendency to try and rip people off). If you are feeling particularly adventurous you can take the metro to Zeytinburnu and transfer over to the tram that will take you to Sultanahmet (6 lira in total)
Good idea...the only issue for the newb is finding the tram from Zeytinburnu...it's a few mins walk and is not immediately obvious in which direction. It needs better signs. At some times of day, the metro/tram will beat the cab timewise.