Nick, This should have been fixed at PDI. The "Normal" Morgan speedo reading is above actual speed by about 8% from recent experience.

This link may help with the problem
https://docs.google.com/viewer?a=v&p...DIxODYzOTRmNjJj

Contacts in the Department of Infrastructure regarding the Australian Design Rules provided this note

The current ADR prohibits any under-reading:

"5.3. The speed indicated shall not be less than the true speed of the vehicle. At the test speeds specified in paragraph 5.2.5. above, there shall be the following relationship between the speed displayed (V1 ) and the true speed (V2).
0 ≤ (V1 - V2) ≤ 0.1 V2 + 4 km/h."
This formula means that the vehicle's actual (true) speed must not be greater than the displayed speed. (Displayed speed minus true speed must be greater than or equal to 0, and less than or equal to 4kmh plus 10% of true speed). This means that if your vehicle's actual speed is 100kmh, the displayed speed is permitted to be anywhere between 100kmh and 114kmh.


This is also an interesting read (Page 4 and section 5.3 on page 10)
http://rvcs-prodweb.dot.gov.au/files/ADR%201803.pdf

In any case get Morgan Australia to fix it under warranty.

A Morgan Identified Fastidious Owner...
2011 4/4 Bespoke, 1981 Delorean, Auburn Boat Tail