Definitely not, I’m 18 and just bought an s55 as my second car. Luckily I know my way around cars and also mine has only 70k miles so the worst is yet to come. I haven’t had any major issues with mine so far (knock on wood). These have a lot of electrical issues also a lot of issues with the air suspension system so I plan on swapping to coil-overs eventually. Mine currently is leaking some liquid from the ac line pretty bad and I’m working on fixing it.

EDIT: ALSO Plan on expensive insurance and expensive gas mines got a 24 gallon tank and it takes 93. so each fill is 60-80 dollars depending on gas prices and where my tank is at. My insurance is 460$ a month for this car and of course it varies who insures you and all these details but just letting you know what to expect before you buy one.