The author remixed this model.
The original files cannot really mount the Audi E-Tron, since it's kind of using a completely different mounting system. I tried making one using the original files, with the same angles, but instead using a custom 6x8 plate, and very tall posts that fit the crevices under Audi E-Tron
Print it as oriented, with tree supports. It's actually printed using the exact same recommendation by MatzeBob