Breakdown cover in Spain isn’t a legal requirement, but it can make life easier and save you money if you break down while you’re away. For example, you’ll have access to an English-speaking helpline 24/7 and be covered for all costs for roadside assistance with the RAC.
You should bear in mind that UK breakdown cover won’t usually apply in Europe (unless you’ve bought European cover as an add-on). So if you want to stay covered, you’ll need to buy a European breakdown cover policy before you go.