280 s w116 general questions!?

hello, hope someone can help me here. am thinking about whether I should buy a 280 s w116. but now I’ve read a lot of bad things about the car. – very rusty – consumption too high for the model – motor doesn’t last so long – etc., etc. what’s it about!? unfortunately I don’t know about youngtimers. but I just think the w116 looks good. how is that with the 07s number, can I also drive a little more than just a flight out? and where do I learn? e I know people who sometimes make me work smaller on the car. because I don’t have to go to a mercedes workshop. that’s going to be a bit too expensive!!? what should I look for when buying!? km? rust? ??? mfg, kelubiawww.kelubia.de