Hey im new here, and i need some help. I am looking at a couple of mercedes'. One is a 91 300SE with 143k. They want 5400. Also, there is a 84 380SE, with 212k. They want 5400 for that, and it has a rebuilt engine. How do these cars last with that kind of mileage, and what kind of problems are common. Any other info would be appreciated!!! Thanks in advance.