Vehicle Damage

Whenever a vehicle is hit by an attack, it resists damage as normal, rolling Body + Armor. If the attack’s modified DV is less than the vehicle’s modified Armor, no damage is applied. Note that since many vehicles have large Body dice pools, gamemasters are encouraged to use the trade-in-dice-for-hits rule (4 dice equals 1 hit) to simplify tests. Your average tank, for example, will automatically get 4 hits on a Body Test through that trade in, so there is no point in rolling unless the tank needs more than 4 hits.

(CRB 205)