Your old car needs to be over 10 years old I think. The new one needs to be either A or B (Energy efficient or something like that). Price below 25,000 euros, the old car needs to be 'matriculated' in Spain.
Expat Forum For People Moving Overseas And Living Abroad
A forum community dedicated to expatriates and enthusiasts. Come join the discussion about residency, taxes, documents, visas, travel, health care, finances, banking, classifieds, and more!