The HPD police vehicle that McGarrett commandeers after walking out of a gas station restroom has a floor shifter, which a real 2000-present Chevrolet Impala with the 9C1 police package does not have in real life. The police-spec Impala has the gear shifter on the steering column.
The character of Joe White is far too old to be holding the rank of Lieutenant Commander in the Navy. The average age for this rank is 33 while only a handful of senior prior enlisted and former warrant officers hold this rank past the age of forty. Actor Terry O'Quinn was 58 when he portrayed White, with his character looking about the same age.
In the boat assault sequence, a stuntman wearing a terrible wig and standing in for Daniel Dae Kim can be seen at the boat's controls.