Thanks guys for your answers.
Actually i'm not in Spain, I'm living in California for a while.
The current owner told he uses the car as a daily and it high mileage is due to motorway miles he does to go to work..
I checked the car (not tested yet, no time) and it seems to be 100% stock which attracts me more. I'll probably test the car next week and I'll give feedback to share impressions with you.

I have another doubt to ask, what does PPI (kind of inspection) stand for and the meaning? The owner told me to do that if I wanted to be 100% secure...

Thanks again for your help!!