The average price of petrol in Miri is ฿ 12.50/litre over the past month, costing you anywhere between ฿ 563 and ฿ 813 to fill up a car’s fuel tank.
Generally, for a better deal it’s recommended to book in a timely manner (to save up to 49%). Cheapflights recommends you book around 90 days prior to your deserved date. Booking as early as you can also increases the likelihood that you’ll get the ideal car.
The length of time you can book a car hire for is subject to the inventory of the supplier. When renting a vehicle from Miri it should be possible to hire a car for a whole month if needed.