Here is a list of the vehicles that you can jack, how you do it, and what it does.
Ghost-Hold x from front of the vehicle (when an enemy is in it) and you will jump on the wing of it the swing kick the pilot out. Hold x from the back and you will punch the pilot out.
Banshee-Hold x and you will kick the pilot out. NOTE: on some levels during the campaign you must be in the back and some levels you are not allowed to steal them, for example the level when you must kill the Prophet of Truth.
Wraith-Hold x from the back and then continue to press b multiple times until the gun shuts down and the wraith stops hovering. Hop out, go to the front of the vehicle, hold x, then you will be able to drive it. Hold x from the front and then keep pressing b to smash the cockpit door until the pilot falls out. Hop off then hop back on to drive. NOTE: You will be prompted to plant a grnade, don't di it it is a waste.
Warthog (multiplier only)-Hold x from the side to throw the pilot out of his seat then you will hop off, hop back on to drive.
Scorpion-I'm not sure if you can take this because I haven't tried, but if you can it can only be done in multiplayer and will probably be similar to the wraith.
Spectre-Hold x from front or side to kick pilot out. |