Obscured Target
(Rule)Description: A vehicle is obscured if:
• At least 50% of the facing of the vehicle that is being targeted (i.e. its front, side or rear) needs to be hidden by intervening terrain or models from the point of view of the firer for the vehicle to claim to be in cover. If this is the case, the vehicle is said to be obscured (or ‘hull down’). If a squad is firing at a vehicle, the vehicle is obscured only if it is 50% hidden from the majority of the firing models (do not count models that cannot hurt the vehicle). Just like with units of several models, if you’re not sure whether the vehicle is 50% in cover or not, simply modify its save by –1.
• Vehicles are not obscured simply for being inside area terrain. The 50% rule given above takes precedence.
• Obviously, vehicles cannot go to ground, voluntarily or otherwise
If the target is obscured and suffers a glancing or penetrating hit, it may take a cover save against it, exactly like a non-vehicle model would do against a wound (for example, a save of 5+ for a hedge, 4+ for a building, 3+ for a fortification, and so on). If the save is passed, the hit is discarded and no roll is made on the Vehicle Damage table.
If a special rule or a piece of wargear confers to a vehicle the ability of being obscured even if in the open, this is a 4+ cover save, unless specified otherwise in the Codex.
It may rarely happen that the firing unit cannot see any part of the facing they are in (front, side or rear), but they can still see another facing of the target vehicle. In this case they may take the shot against the facing they can see, but to represent such an extremely angled shot, the vehicle receives a 3+ cover save.