I have a question

Why is it when there is a heavy vehicle drop (Scorpion/Wraith)

If I grapple to it why does it alway put me in the passenger seat (Gunner) even if nobody else is near it it allways puts me in the gunner seat, why?

You must have grappled the turret directly or the area of the turret. That’s why I always grappleshot at the center mass from the side if I can help it.

The game’s grapple mechanics automatically detects whatever seat is available near your grappleshot, so you must be pretty precise with it.