More fluids to change?
Do manual gearboxes no longer use fluid?
Fuel is not great... but it's no worse than a WRX really...
Service cost will depend on where you take it, but really... It's a Mitsubishi... If you're comparing it to any other similar class and aged Jap car, it will be much the same. Plus if you can get into an MY10+ then you will have fixed price servicing from Mitsubishi, which is cheep!