The following things have to be repaired on the SL 500 R230 – is this “normal” at 10 years old SL?

Hello and good day. This should NOT be a provocative question or something like this, just an opinion whether such necessary repairs are “normal” with a >10 year old car or if I made a bad purchase about 3 years ago (the latter I don’t actually believe, since they are “little things” – BUT I’m not a professional)? The following must be done with my SL: Heating (does not work since September 2013) Window lifter broken left (before the “wining sleep” radio knistern (se It purchase date crackles when gas is given) blower controller no longer works (either FULL or OFF) cover leaks braking (ok NORMAL wear, this also knows a lay) tank indicator hangs (needle likes to put on “Empty” although tank is full-since summer 2013) case tamper lidbHydraulik (cover “falls down” or has to be held-since summer 2013) windscreen wiper automatic…Intervall defective seat adjustment lighting defective tank lighting defective (since 2013) car phone defe kt (i.e. since when, is never used). Hmm…if I read this like this, do I already have a lot to do with it…WOBEI motors, gears and ABC etc. have never made mistakes before… So maybe again luck with the above “little things”? Thank you.