Hello together, drive a C30 1.6D BJ. 2008 and have to give it in 4000km for inspection. Well, warranty has unfortunately expired and I have a few points that I would like to address at the workshop. These points would be: – Let gear oil change (the oil that DriveE gear is used should be better) do you do that by itself, if I say gear is a little rough? – left seat knärzt beim ein und Aussteig – Right speaker probably has a crack (can they get that out on site themselves, or do I have to identify the speaker myself?) Now to my main question: Sometimes, in idle run, the speed varies between 900 and ~650. Especially if I can drive on a traffic light and let the car roll empty and come to a stop. Since it is a self-ignitioner, can be here no faults ignition shorts. I would like to fix this problem, but do not know if you can find the error (whether leasing company pays the reperatur at all). What else is replaced? Brake linings, DPF has been read as a car.