We didn't intend to drive in Sapporo. But on our second day there, Adamson's good friends Jo Anne and Jimmy stopped by to visit us on their way up to Niseko ( they holiday there to ski).
Plan your itinerary ahead so when you head down to rent the car, you can buy like season passes for the road tolls. Very cost saving if you’re driving Long distances. Other use it will just be individual tolls which will be kept on tab and you can pay for it all one shot when you return the car.
When pumping petrol, their system is different from Singapore. You have to go to the cashier and pay for a specific $$ of petrol before you actually pump it into your car. So example 1000 yen, 5000 yen etc. If you want to fill it up to full tank, the key is to over pay. Then with that receipt, you go fill the tank, whatever value is leftover because your tank is full already... you then go back to the cashier with that receipt and they will refund you the difference. 🤷🏻♀️
There's a Budget Rent a Car counter at New Chitose Airport's Domestic terminal. Or if you Google, there are loads of car rentals. Ours was a car rental called Orix in the city close to Odori park area. DO NOT FORGET to get an International driving permit before you leave Singapore.