I just purchased a 1995 e320 wagon but did not want to have to run to the specialist for every job. This book contains enough detail to keep me busy. If you want to understand how to do most traditional DIY jobs then this is for you. It will help you with services, brake jobs, basic A/C and a host of other maintenance items.
I believe if you have access to a full workshop, etc. then this may not be the manual for you, as it does not show you how to rebuild a gearbox, AC compressor etc. If you are an expert mechanic then this may not be detailed enough for you.
Mr average Joe like me - will love the tips and help to diagnose issues without paying specialist rates.
Good Luck
Chris