- Th S class will always have certain issues as far as suspension issues due to the weight and air suspension parts wear out over time.
By 2010 most of not all the issues the S class has were ironed out. They are as close to bullet prof as you can get.
You are like me. I keep my cars 10 t0 15 years.though it's not my first German car the S class is a completely different car far more complex than the E class or BMW.
If you plan on keeping this car for 10 to 12 years you must service it on a regular basis and by the Mercedes extended warrenty. It's expensive buy can cover you to ateast 100,000 miles
These cars if maintained right will last at least 250,00 miles.
I have a 2012 and love it. Good luck