There is several parking places in Malaga, all of them are next to the terminals, Paking P1 is next to termina 1 and P2 is situated in front of the terminal 2, both of them have a capacity of 2.500 cars.
There is several prices for the parking long term or short, the short price are from Minutes 0 to 30 minutes are 0,021218 € from 31 minutes to 60 minutes are 0,033596 €, and from 61 minutes are 0,027309 €.
The long term prices are from 18 euros per day with a maximun of 4 days, and if you want to leave it more than 4 days it will chage you 14,40 euros per day.
Also there are some private companies near the airport they are cheaper and they will take you on a minibus to the terminal.
On these map you can find the airport parking.