If you are looking for the cheapest car hire in Bulgaria then it is a good idea to investigate this when you are at the planning stages of your trip.  Check with the airline or tour operator that you plan to travel with as they are often able to offer some of the cheapest rental around if you include it as part of a deal with a flight or holiday.

You can also find some of the cheapest car hire in Bulgaria simply by looking at the websites of the rental firms that operate in the area.  This is often where the best deals are posted first and most of the companies will have extensive FAQs sections, as well as call centre numbers if you want to speak to a representative of the company about your hire requirements.