Will there be no problem to enter Romania with a rented car?
Inquire with the company, if all the documents are ready with them, they will let you in, of course.
They will let you in as long as you have insurance coverage (you need to clarify in advance at the rental).
You just need to have a hotel reservation. We were delayed at the border once because we were going to a friend's place and had to ask him to send us an invitation.
Did you do anything to the car? Did you check any documents?
@Vladimir: They only care about marital status, they don't even look at a rental agreement.
@Dmitriy: what is this?)
@Vladimir: Certificate of registration.
@Vladimir: STCKA in RF
Serbian insurance operates in Romania
@Dmitriy: I have interacted with two rental companies over the past two years, and everywhere there was one thing in common - some cars are covered for Serbia + EU, while others are only covered within Serbia.
@Sergey: Strange, I've only heard of some people asking for extra money for traveling abroad, which seems very odd. A regular Serbian insurance always covers all of Europe.
@Dmitriy: When I was insuring my car, they asked me whether to include EU...