That 30 euro was for engine specific maintenance. I spend 20 euro on the yearly oil change, including the crush washer. And about 10 euro on miscellaneous part

That 30 euro was for engine specific maintenance. I spend 20 euro on the yearly oil change, including the crush washer. And about 10 euro on miscellaneous parts. A set of spark plugs were €9,28 last time. Gear box doesn't need much. Oil gets changed when I do clutch, which isn't often. Just like how you don't need to change the differential or motor fluid on an EV motor often.