Well, the one I have been sent is definitely not right. I've attached a picture made up of three photographs.
On the left, a genuine disc (seems a previous owner had updated to the 2008-2009 disc), on the right the one delivered. As can be seen the genuine disc has a glossy printed surface, the supplied disc has a flat matte surface consistent with a printable blank CD.
The middle section shows the genuine disc on the left, this gold colour is consistent with a pressed disc created in a factory, the disc supplied is purple which is consistent with dye-based recordable media available to joe public.
The supplied disc shows up as:
Book Type: [DVD+R DL] - [ DVD-ROM]
Manufacturer: [ Mitsubishi Kagaku Media ]
Manufacturer ID: [MKM]
To be fair this manufacturer ID is up in the top class of burnable media.
And finally, on the right, the actual result. Not readable. In ten attempts at starting the car the supplied disc was recognised once, after a 25 second wait. The genuine disc is recognised immediately every time.
So, there you go. Hopefully this post will be helpful for people. Essentially.......... Caveat Emptor :)