2002 Boxster S

1. Comparable market$17.9K

   18 of the same trim advertised at around 55,262 mi.

2. Mileage+65.9%$29.6K

   11,930 mi against 55,262 mi, the mileage the cars it is priced against carry. This cohort gives up 27.5% of its value each time the odometer doubles. That curve was read off cars between 33,715 mi and 159,053 mi, and nothing has been observed beyond it, so the mark is struck at 16,858 mi rather than carried out to this reading. Confidence is low until a car near this odometer is advertised.

3. Model year-0.5%$29.5K

   A 2002 against a cohort centred on 2002.

18 cars, model years 2000–2004, asking prices spread ±17%.

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