Also having a black German car it takes prep and then picking a good no great LSP.
A "PC" is needed. Check Autopia's online shop for the
Sonus line. Works well with German finishes as David B is also a "P" car owner. Also use an ultra-fine clay for light debris. Heavier debirs takes a more aggressive clay.
You're LSP can be wax or sealant, your choice and besides, YOU have to look at it and enjoy it. Wax:
Souveran, or any high-end wax for dark finishes. Sealants: Zaino, FK1, Rejex,
Meguiars etc. Now, I have Zaino on my Porsche. Each sealant or wax has a very unique look.
Daily, wash often to knock-off light dust/dirt. Washing also means using sheepskin mitts, two-buckets, lots of water and a way to get it dry fast. I use a Toro hand-held leaf blower that also has a filter attached just in case to whip-off water, then fiish with a MF towel.
Towels plays a BIG roll!! Invest in the best! Use soft thick plush ones for QD work to trap dust/dirt and hold it. Change them often when using them on the finish. What I mean is, don't use just one for the whole QD work. Use one for part of the car, change to a fresh towel and do another section, change again you get the point. Use cheaper MF towels for wheels and never mix them. Get color coordinated which color for what. Coat your wheels with a sealant as waxes cannot take heat from brakes. Interior is your choice if leather, Zaino Z-10 or 1Z "Lederpflege" for treatments. Please don't use Lexol on German leather! Besides Lexol smelling like goat pee, it can leave a film not only on the leather but off-gas and leave a film on windows, gauges etc.
Purchase a fitted sunscreen for the windshield! You'll need it!
Most important, PAINT FILM! If you want to protect the paint from rocks and other objects, paint protection film is mandatory! I have Armorglove on the Porsche and worth every penny!
Enjoy the new ride and CONGRATS!!!!!
Deanski