Not an Inspector: But....
The length of the cord shall be 0.9 m to 1.2 m (3 ft to 4 ft) measured from the face of the attachment plug to the plane of the rear of the appliance.
2'+ is under the DW most often, what you don't use cut off, and leave 3-4' from the back of the unit. A Bosch will have about 3 1/2' in the track that runs under the unit to the receptical in the cabinet next to it, so using a 6' cord, as I normally do, leaves it a little short, depending on where under the sink the receptical was installed.
