As a previous owner of a 1985 380SE (from 2006-2007), they are excellent cars. Mine had nearly 280K when I sold it. Transmission was original and still shifted like new. It had NO leaks, but I think the engine was getting "tired". I needed injector seals, I think one of the cams was worn, but it still ran great and everything still worked on it!

Like the above poster said, the main thing is to make sure the timing chain, guides, rails and tensioner have all been replaced. This car has the dual chain, which is much better than the 1983 and older 3.8L which has a single chain, but on the 84-85 3.8L, its not the chain thats the issue, but the guides and rails wear out and replacement is critical. If not, get a quote for replacement in your area, then haggle price if necessary. Also, check floors and undercarriage for rust, especially if you live up north. I live in the south and my car was 100% rust free, but I had water getting in the rear floor and trunk because of a bad antenna seal. No rust developed though, as I caught it early and a $3.00 seal stopped the problem. Also check around the rear window for leaks. Also check HVAC controls, windows, locks, etc.

Overall, highly recommended.

Good luck!