Almost every town in Spain has a place for bike rental. If you decide pedaling a bicycle is health- and cost-effective, rental costs are usually quite low and you only need your passport and a valid credit card to hire one. However, think carefully about what time of year and what time of day you may choose to ride a bike in Spain. If you are a bit of a first timer, the heat can zap your energy and most of Spain is multileveled, which could make for a strenuous ride.
Mopeds and scooters are a very popular and cost-effective form of travel in Spain. You can hire a scooter in any popular tourist town within Spain. Prices can start from 20 euros per day for hire and 5 euros to fill the gas tank but the scooter tank will be filled for you once you hire it. The scooter can also be delivered to wherever you are staying. If you want to rent a moped in Spain, you will need your passport, a driver's or provisional (only for under 50cc) license and a valid credit card.
Depending upon the area of Spain (whether it is a tourist hot spot or rural inland area), public buses are available. Don't expect a bus every few minutes as you would in London. The more popular tourist areas and larger towns in Spain like the coast towns of the Costa Blanca have regular buses that travel to other coastal towns, making frequent stops. Traveling around Spain using a coach is great for long distances and usually costs less than driving yourself. See Resources.
To drive from one main city to the next can take hours in Spain combined with the costs of fuel. If you wanted to drive from Malaga to Madrid, it can take up to a couple of days or more for some drivers. As airports are well placed within Spain, a short and cheap flight can get you to your destination with your energy and wallet intact.
Farmers still ride their donkeys and use their carts to bring produce to markets. As much as Spain is very cosmopolitan within its major cities and towns, there is a real experience of natural Spanish history still alive today in Spanish countrysides and on peaceful roads.
Any form of illegal driving in Spain can be fined heavily if you are caught. The Spanish police can legally enforce an on-the-spot fine. Saying you don't have the money on you will not make them change their minds and they will happily follow you to the nearest cash point or take away your vehicle.