Weltenbummler is looking for a motorhome?

Good day dear friends, I’m looking for a car. I didn’t have a car before and it will be my first car. I finished my studies and would like to camp in Spain and Portugal and stay there or in the car. Of course, I would like to have a Volkswagen T3/4, but the prices are simply utopian for my conditions. That’s why I think I’m well-kept with a station wagon when I’m monetizing or flipping the seats. Do you know about my idea? To my situation: I actually could save 1400 euros and could cover 600 euros my credit card. Of course the car should be at least Euro 4 and diesel I thought about. I would like to have a Mercedes because the engine should not cause any problems. (I always said my grandpa) Otherwise I don’t care about the manufacturer. It should just not cause any problems. I would like to ask someone from around me, but somehow nobody owns any of them. a car and can’t give me any advice. What do you think about my idea and is it even feasible? Thank you!