Taxi fare to Mazarron/Port 20- 25 euros I have to put in 4 as Taxi only 5 seats. Many are aware i run a minibus as well . This is a 9 seater but does not run as a Taxi. It is registerred as a Hire vehicle so if groups are larger we have to do HIRE packages. IVA is more on Hire and we have to pre arrange contracts. I took legal advice and had vehicle registed and tested for this purpose.
Hire of vehicles is not straight forward. Vehicle has to be re tested re registerred at Traffico and different type of insurance obtained. You also have to be registerred with Tax authorities for this purpose. Sorry if it sounds complicated but I have spent some time developing a way to run a legal business for Condado.
I am also aware that if you have a fleet of vehicles then you need a registerred premises, so any one saying they are a car hire should provide details of who they are and details of their offices. After all if you ask someone to pay money up front they should be able to know how to find you.
eg F&C http://www.fcrentacar.com/fc-rent-car-spain-locations