the problem is when your new to the city and don't know where to catch a taxi and you get approached by a legite taxi driver but he takes you in to the city and doesn't turn on the meter. If your a businessman than its a 50 euros trip (40 if not). This verse perhaps 25 on the meter.

Another problem is lot of taxi drivers will refuse to take you if they don't feel like driving that far. One guy had to wave down 4 taxis till he got one that would take him. Us as well we had a guy refuse to drive us to Tres Cantos. Which doesn't make sense becuase its an expensive 30 euros plus run. Usually its the other way around they don't want short trips. At least I would think that.