Out of all the popular cities in Japan, Okinawa is the cheapest city to rent a car in at just ฿1,066/day. Renting a car in Okinawa is 70% cheaper than renting one in Tokyo where the per day rate is around ฿3,440. Other fairly inexpensive cities in Japan to get a rental car in are: Sapporo (฿1,366/day), Nagoya (฿1,631/day), and Osaka (฿2,059/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 ฿3,440/day on their transportation. The most popular city to rent a car in Japan is Tokyo.