Weapons and defenses
Build and Kill Zombies describes its own loadout in four words: “Add crazy weapons & defenses!” The and matters. Two categories, not one, which means a car can be wrong by being all offence.
Weapons
Official art shows multiple mounts occupied at once, on the roof and at the front, plus a spiked ram on a second image. So there are at least two kinds: things that fire and things that hit what you drive into.
Defenses
Named as a separate category by the developer and shown by nobody. No guide we found describes a single defensive part by name, which is the clearest gap in the published coverage of this game.
Why no statistics table
Because there is nothing to fill it with. Across every guide, video transcript and wiki-style page we collected, not one gives a damage figure, a durability figure or a part cost. A table of made-up numbers would rank better than this paragraph and would be worse than useless, so this page stays a paragraph until someone measures something.
What an end-game car physically looks like is on the best car page.