Just got a call from BMW dealer where my 2017 is getting first service (600 ml). Apparently, chain tension is out of allowable range and they need to order and replace some part to fix it. That'll be 150 euro in addition to 200 euro service (with my own oil and no tax). Not something warranty would cover as It's just a part of normal service, they say. BMWs are expensive, even scooters ��