This thread comes to mind:
Murphys-law-catastrophic-failure-very-bad-place.html (Greg's new L322 RR which blew a rear shock on the Canning Stock Route, and took many thousands of dollars of LR-Assist to get on the road again).
Maybe the 20" rims were the cause? Is that fit for purpose? Because it is such a specialist car, you can't just go to your local Repco and ask for a shock absorber. At least with something more 'traditional' like a PUMA, you stand more of a chance of being able to get something off-the-shelf that can be adapted.
We went through all of this when working out what sort of truck to buy. Something older that a old fashioned diesel mechanic can fix, or something new that needs a factory computer to diagnose. Talking to companies that use trucks in the outback, their attitude was - once these new trucks are bedded in they are ultra reliable and the electronics rarely give problems. So in the end we decided on new.
We had had an "Engine Light" issue in the first 1000 Kms. It went back to MAN and they hooked it up via a satellite to Germany and someone over there diagnosed a faulty 02 sensor. It was still drivable, so hopefully things hold together like that until you can get it to a dealer.