I have daily driver Porsche under warranty. I don't have hard numbers but it's been very reasonable. I had two certified pre-owned BMWs and never paid a cent for their entire lifetime. Porsche has cost me for tires but was brand new and under warranty. Fuel pump failed, replaced under warranty. I drive it everyday. It's brilliant. German engineering is great. Thinking S class Mercedes next. Is this helpful? or just bragging? haha :-)
Don't know about the current S class but the previous models were plagued with electronic issues. Source: father owned one and extended family owned every single one of them.
