The average gas price in Matsuyama is 29,296₫/liter over the past month, costing you anywhere between 1,318,340₫ and 1,904,268₫ to fill up a car’s gas tank.
The length of time you can book a rental for is subject to the inventory of the supplier. When renting a vehicle from Matsuyama it should be possible to rent a car for a whole month if needed.