Serbia, Montenegro, Bosnia, Serbia

Although the waiting time was nearly an hour, it was mostly due to incomplete preparation of documents and language barriers. Foreigners are very organized and punctual; they won't serve you before the appointed time. Also, their flexibility can't be assessed by domestic standards. Completing a single transaction generally takes about half an hour; mine took roughly 18 minutes. The lady who served me was very friendly.

Brand new car with only 1000 kilometers

Patience

Excellent service

The price didn't match what was advertised on the website. The site mentioned a charge of 4.8 euros per day for crossing the border. We only needed the car for two days in Montenegro but were told to pay a maximum charge of 48 euros for ten days (even though we were renting the car for only eight days). The reason given was that they couldn't know how many days we would be abroad, despite entry and exit records clearly showing this. It felt like an overcharge.