Interesting that second hand cars are so expensive. I wouldn’t have thought that. Is it a tax thing?
80% of new cars in the UK are sold on PCP leases (just looked it up) so a lot of people are used to a new car every 3 or 4 years. It means that the second hand car market is flooded with these ex lease cars. Our red convertible is one, 30 months old when we bought it at Fiat Watford - 8500miles - £7500 (like new) - was £17500 new.
Spain is like the UK 25 years ago. Most people buy a car and run it into the ground. 8-10 year old cars on the road seems to be the average locally here.
You can buy a Fiat on a lease here, but it is very expensive - For example (from Fiat.es) 500s twinair 105 basemodel €16300 > €3000 down and then €249.49 for 49 months - then you give the car back
€269 for 60months to purchase on HP.
Credit is restricted here and it's more expensive to borrow than in the UK etc
When I last checked there was a tenth of the number of second hand Fiat 500(s) available compared to the UK on a site similar to Autotrader.
There is a transfer tax to pay on changing the name of the owner (by the buyer or putting the car in your spouses name etc), it is 4% of the sale price or government recognised value of the car if just transferring.
Here it is also possible to transfer the car insurance to the buyer, as the car is insured, not the driver!