voy a escribir en ingles porque sera mas rapido.
I just moved to Spain from Non-EU country to work in main company office on high management position.
First step, rent a flat, done. Now, I was looking to buy brand new car with single payment (23.000) in 1-2 months (to bring cash from homeland and deposit in bank) and I realised that in Spain cash payments over 2500 euros are not possible and that all deposits over 3000 euros and under tax radar. Tax radar of course is not a problem since I work in managing positions for more than 10 years and always had good salary and have savings. But incomes are not made in Spain, so assumption that I will need to justify money, just not sure what to present (what kind of paperwork in Spain)?
Also, another option would be to buy car in Germany and import it, or just to do bank transfer money from homeland to car seller.