1)Your requirements list is correct.
2)I did the following:
-bought used EU rear lamp pair, for cca.300 EUR (new lamps cca.750EUR) on the internet in Germany
-the cables to lamps are a little different, 5 lines instead of 6, so the electrician had to install one more, 3 m long, from control panel to lamps
-mount the EU rear lamps, connect them EU ways
-program (=assign) the control channels of the auto-computer to the physical lines accordingly, fog lamps too
-front lamps are the same, so no change was necessary
This was accepted at EU inspection, I received EU licence plate.
3)To sell A8 in USA, and buy one in EU. This idea just sets you back 25.000 USD, as the prices are the same (except one is in USD, the other is in EUR!)
4)It looks going to be easy to refit the US mount,
when I move back again next year.
Originally Posted by A RO 95
Euro Delivery vehicles are registered on temporary licence plates and do not have to fulfil EU homologation. The vehicles of US military or government personnel are also exempted under certain conditions. I am certain that in the UK the headlamps also need to be reset or replaced because of left hand traffic.
EU cars require:
Amber turn signals
Rear fog lamp
Asymmetric dipped beam
All safety equipment and lighting must be E marked
Licence plate must be fitted front and rear and a special dispensation maybe required if a European format licence plate does not fit and a "special" US size plate is to be issued.
I know people who have moved here to Germany from the US who decided that it was less hassle and cheaper to sell their car in the US and buy a new car here.