G400 CDI for Africa trip

Hello together, I’m just about to get a G-Class, because I have an 8 week trip through Africa. However, I would like to have this car not only for this trip, but would also like to use it in Germany. For this reason I tend to a G400 CDI, because it also offers me a lot of “Germany suitability”. Does anyone have experience like it is to tour through Africa with a 400 CDi? Repairs, first-hand supply, susceptibility with high load I would be very happy about tips or experiences. Greeting Christian