Out of all the popular cities in Japan, Okinawa is the cheapest city to hire a car in at just $46/day. Renting a car in Okinawa is 46% cheaper than renting one in Hakodate where the per day rate is around $85. Other fairly inexpensive cities in Japan to get a car hire in are: Sapporo ($54/day), Tokyo ($63/day), and Kumamoto ($65/day). While these cities typically have cheaper prices than the rest of the country, travellers looking to hire a car in Tokyo should expect to spend around $63/day on their transportation. The most popular city to rent a car in Japan is Tokyo.