Out of all the popular cities in Japan, Okinawa is the cheapest city to rent a car in at just ฿ 1,018/day. Renting a car in Okinawa is 70% cheaper than renting one in Tokyo where the per day rate is around ฿ 3,286. Other fairly inexpensive cities in Japan to get a rental car in are: Sapporo (฿ 1,305/day), Nagoya (฿ 1,558/day), and Osaka (฿ 1,967/day). While these cities typically have cheaper prices than the rest of the country, travellers looking to rent a car in Tokyo should expect to spend around ฿ 3,286/day on their transportation. The most popular city to rent a car in Japan is Tokyo.