1987 911 Turbo 3.3

1. Comparable market$244K

   9 of the same trim advertised at around 40,043 mi.

2. Mileage+79.2%$438K

   2,970 mi against 40,043 mi, the mileage the cars it is priced against carry. This cohort gives up 18.7% of its value each time the odometer doubles. That curve was read off cars between 7,022 mi and 119,614 mi, and nothing has been observed beyond it, so the mark is struck at 3,511 mi rather than carried out to this reading. Confidence is low until a car near this odometer is advertised.

9 cars, model years 1978–1989, asking prices spread ±26%.

Struck from advertised cars and adjusted to this one. Indicative only.