Hi, could anyone help please? I have a 2014 Mercedes c class and when I start it in the morning it’s rough as if it was misfiring then after a few minutes it goes back to normal. It drives absolutely fine and idles as it should. If I turn the car off for a few hours and then start back up it’s fine. It’s only in the mornings or I’m guessing after a long period of time that it would do this rough start. There is no dash or warning lights. Many thanks