Those were bulletproof. As far as I can tell, it was the last of "forever" cars from Mercedes.
My stepmom had a mid 90s Mercedes and it was not reliable and scheduled maintenance cost more than my car payments on a Chevy Caprice. She got rid of it after it broke down a week after it had gone through its Annual "check everything" check-up.
The engine? Hehh.. TRY to stop it!