Continuity mistake: At the cathedral scene, when Batman & Vicky are hanging at the ridge, and the Joker is about to be picked up by the helicopter, the color of Joker's jacket changes from purple (front shot) to red/orange (shot from above) and back again. The orange one may be his blouse, as it has the same colour visible under his jacket in the front shot. Then, the same jacket and hat are seen hung over the gargoyle just a few seconds later.
Continuity mistake: At one point during the car chase through downtown Gotham City, the Batmobile maneuvers a sharp turn with the aid of a cable that launches from the driver's side and hooks onto a steel beam structure nearby. But as the Batmobile starts cornering, notice how the cable appears fastened in a different manner. Between shots, it has tied itself completely around the beam instead. (01:08:15)
Continuity mistake: Towards the end of the gunfire exchange scene at Axis Chemicals - from the point at which Joker was pondering an escape on the catwalk until Batman turns around to see the shadow of a police officer closing in on him - notice how the exit bears an altogether different appearance between views. (00:27:35 - 00:29:40)
Continuity mistake: When Batman and Vicky are running from Joker's museum plot, and are running from Joker's henchmen, he shoots a cable up to a walkway. As the camera shows him firing, he fires the rope at a 45 degree angle, yet when he and Vicky are going up on the rope, the walkway is directly above them and the rope is perpendicular to the ground.
Continuity mistake: Vicky Vale's first name is V-I-C-K-I in the credits. On the cover of the magazine, it's spelled V-I-C-K-Y.
Continuity mistake: When Batman collects the balloons' cables in his flying vehicle's anterior contraption, he gets 6 or 7 cables caught, but when he closes the scissor-like mechanism, there are only 5 visible cables. Also, when he collects them, they gather at the back of the mechanism, but when he closes it, they are neatly caught in small notches.
Continuity mistake: Whenever shots show the view looking down on the ground when Batman and Vicky are hanging from the cathedral, it only shows two spotlights shining upwards from the ground. In other shots just showing the upper part of the cathedral, there are three or four beams visible. Also, the movement of the beams from the ground and the ones actually on the actors don't correlate between shots.
Continuity mistake: After rescuing Vicki from the museum, Batman leads Joker's henchmen on a downtown chase with the Batmobile. One car on his tail causes a major pileup at the intersection near Monarch Theatre. A short time later when the unmanned Batmobile is making its way down the street, it passes right through that very same intersection. This time, however, there are no indications that a pileup ever took place just moments before. All mangled vehicles and debris have disappeared. (01:08:20 - 01:12:00)