Chris,
Sorry to hear about your accident. I live in the Bay Area, also (Marin).
My experience has been that from 100,000 to 170,000 miles I have put $20,000 into my car. At 170,000 miles, I thought I was finally finished, that nothing else could go, but even after spending $2,000 on the A/C last year, it looks like it will get another $3000 to stay cool this summer.
With so much money in this car I can't justify selling it, but it makes me crazy.

Tom
92 500E, 170,000 miles