A warranty on a car that is nearly 15 years old? Surely you jest, sir!

Even if such a thing did exist, the expense would be positively crippling if it covered anything at all.

Buy an S600 at your own risk. You have not given nearly enough information for your questions to be answered. Can you do any work yourself? Do you prefer an indy mechanic, or would you rather take your car to the dealer?

For an S600 I would budget a bare-bones minimum of $3,500 per year and that would be me doing all of the labor. I might get lucky and spend $2,500 but then again something might happen that I can't fix myself and now I'm looking at $5,000.

This is NOT a car to go into blind, but there is plenty of info out there - I would suggest you search this board and search it thoroughly.

Good luck.