3.5km to 4km per liter on the city. 10-11 on the highway cruising at 100kmh. Maintenance is expensive unless you find a reputable car repair shop that doesn't charge you an arm and a leg. I get mine serviced at service shop in Pasong Tamo that does European cars and I'm happy about their price and service.

To compare - CASA charges you 3500 for the hose that connects your wiper washer to the wiper fluid reserve. They charged me 7k (materials plus labor) for that small signal light attached to your fender - about 2 inches long. Only have your car serviced there as a last resort.