I've just bought my 1st ever Audi. I've run it for two months and now it's started to misfire.
Chugging away on 3 cylinders and down on power.
On further investigation I've found that the oil filler cap / breather housing is loose and not forming a proper seal around the base.
I took it to an independent specialist who said it is not a coil pack.
I'm in Leeds, West Yorkshire, UK