With FWD the rear wheels contribute nothing to either push or pull the vehicle. With AWD the rear wheels apply 10% or more of engine power to the ground.SCBEARSFAN said:
With AWD , all four wheels will push or pull the vehicle after the VCM detects slippage on the front wheels and tightens the clutches in the rear differential . Some AWD vehicles apply full clutch pack tension to the rear axle from 0 to 5mph just to ensure that wheel spin has a very limited opportunity to occur.
AWD also reduces the 3.6L's torque steer to about nil.