Rent a car cash deposit. Prices from 15€ per day. Cheap car rental Varna & Sofia. Car rental Sofia airport. Car rental Varna airport. NEXT5 Rent a Car is a reliable car rental agency in Sofia and Varna. We offer modern and economical vehicles with no hidden fees, full fuel tank, and seasonal tires. Fast contract processing – within 5 minutes, deposit can be paid in cash, and it is returned immediately. No mileage limits. Thousands of satisfied customers and a 5★ rating on Google Maps