Out of all the popular cities in Greece, Zakynthos is the cheapest city to rent a car in at just HK$286/day. Renting a car in Zakynthos is 79% cheaper than renting one in Thessaloniki where the per day rate is around HK$1,350. Other fairly inexpensive cities in Greece to get a rental car in are: Athens (HK$341/day), Thera (HK$357/day), and Thessaloniki (HK$1,350/day). While these cities typically have cheaper prices than the rest of the country, travellers looking to rent a car in Athens should expect to spend around HK$341/day on their transportation. The most popular city to rent a car in Greece is Athens.