An Ork vehicle with Grot riggers on board which becomes immobilised will be able to start moving again on a D6 roll of 4+. You can test to see if the vehicle becomes mobile at the start of each Ork turn.
Grot Riggers
Source: Codex: Orks, p. 37
Source: Codex: Orks, p. 37
An Ork vehicle with Grot riggers on board which becomes immobilised will be able to start moving again on a D6 roll of 4+. You can test to see if the vehicle becomes mobile at the start of each Ork turn.