I reapeared a Gunter 2 that spawned near cherno (to the right near the construction sites), and brought it to my little base.
I putted it into a little garage to keep it safe and got backward a bit too far so i hited the back of my car (too slowly to ruin it, 3km/h only) and it stoped working. I did'nt try to start it again because it was where i wanted to, so i took the start plug and leaved it fot cutting sticks to do a fence kit. And this is when i came back that the Gunter was'nt there anymore.
The attached parts were the baterie, the radiator, the 4 wheels, a door (can't tell which one) and that's all, i also know there were some stuff in it (can't tell what sorry.
I did'nt get that far away from the car, (500 -100m) but it despawned just like if it would've been ruined.
It happened on the DE 1-3 (experimental-unstable server) on the 1.03 version of the game.
Forgot to mention that the car statut was "pristine".
Hope my English was understandable. Hope it helped !