Coming from a Myvi, neither it is cheap nor expensive to maintain. It consumes around 5.5 liter of engine oil along with 2 litres of transmission oil, and 1 liter of LSD differential oil, but at least not as bad as continental woes that I have been advised of.
Toyota and Subaru did a great job RnDing this car, and I would recommend any enthusiasts to buy one just because of how good it drives. Handling is top notch.