as a general rule

(every)
oil = 5000km
filter= 10000km
spark plugs = 50-80000km ( for platinum/iridiums)
air filter = 40000km
fuel filter = 40000km
transmission fluid= 40000km
coolant = 40000km

etc


NOTE because your car is an import , i do hope you changed every single fluid and filter ! Start afresh , you dont know how long these have been sitting in the car...