While the technical regulations regarding the power units are going into their 4th stable year, Mercedes' engine Chief, Andy Cowell, has noted there are still gains to be made. Cowell underlined that the key to these continued improvements are Mercedes' proven testing facility.
It's also interesting how much smoother the Merc engine is when leaving pits compatre to the others....
They are just pulling the clutch leaver and letting the engine run on idle...