Hi Mark, sounds like you happened upon a good car. When I first got mine, it was in the shop more than I care to remember. However, once fixed properly, the car will maintain its condition for a long time, indefinitely actually with proper regular maintenance and care. I have calculated (I am a CPA, so this is reliable info:) that the total cost of maintenance and repairs, once you have the car in proper shape, should average out to approximately $1,000 per year, including paint, engine/FI pump rebuild, tires, you name it, assuming you drive it around 6,000 miles per year. Lower mileage = lower annual cost of course. This does assume you do the work that the average DIY-er (like me) can do yourself with some good tools and books. If you have to have all maintenance done by a professional shop, I suppose this figure can easily double or worse. It also assumes you shop around for good prices. Example, I had my car repainted and some body work done last year, and it cost me less than $1,000, but I also got a quote from another shop that came recommended, for $9,000 !!
The $1,000 per-annum cost is quite cheap when you also take into account the fact that our cars should appreciate on average (certainly in the long run) with inflation which lately has been running at around 3%. This means that the additional cost of the money invested (net 5%?)is offset to a large degree by the car actually appreciating, rather than depreciating like modern-day cars (which ALSO tend to cost a fair amount in maintenance, new tires etc etc) AND depreciate down to almost nil, rather than appreciate. So I tell myself it is much cheaper to drive my Pagoda than my 1997 C180 - although that one achieves twice the gas mileage that the 280 SL does ....
white 1969 280 SL