The average gas price in Siem Reap is C$ 1.28/litre over the past month, costing you anywhere between C$ 58 and C$ 83 to fill up a car’s gas tank.
Booking in advance not only ensures a better chance of getting the vehicle of choice, it can save you up to 23% on your car rental. For a below average price, Cheapflights recommends booking your car rental at least 90 days in advance.
The length of time you can book a rental for is subject to the inventory of the supplier. When renting a vehicle from Siem Reap it should be possible to rent a car for a whole month if needed.