There are plenty of car rental companies out there and you can easily pick up and drop off your car rental at the airport. Renting a car on Mallorca is relatively cheap and we highly recommend this to be able to do some nice excursions and visit all the beautiful regions that the island offers!
Many of our hotels can also organise a car hire for you to be picked up and dropped off at the hotel, please let us know if this is of interest and we will get this organised for you.
Most companies have a final price that will end up around 25 Euros per day with all the different extras they add to the initial price.
Check out this company which we recommend where you can check prices for various well known car rental companies: http://www.rentalcars.com/