1983 308 GTB

1. Comparable market$113K

   6 of the same trim advertised at around 23,314 mi.

2. Mileage-0.2%$113K

   23,900 mi against 23,314 mi, the mileage the cars it is priced against carry. This cohort gives up 6.4% of its value each time the odometer doubles.

3. Specification+12%$126K

   This car has commissioned paint. Most comparable adverts list no options, so they are read as cars without them. The paint is priced at the usual 12.0%: this generation has fewer than three cars either side of the line to measure it on.

6 cars, model years 1978–1985, asking prices spread ±26%.

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