Revealing mistake: Whenever the moving Batmobile is emitting flames from the afterburner, like when it leaves the Batcave for the first time, an object is hung below the exhaust port that resembles a camcorder. The gadget is part of the equipment added to make the car shoot flames while moving. During the TV series, flames are only seen in close-up of the car motionless, as this was a prop comprised of a copy of just the last few feet of the car. On TV, the car's rear license plate is visible. In this film, it's partially blocked by the added equipment. (00:03:35)
Revealing mistake: The Batcave was a stage set with no real exit for the car. So when the car exits for the first time here, one shot is looking into the cave from the tunnel as the Batmobile approaches and passes to our right. Just before the shot ends, the rear end of the car jumps upward and tire skid marks appear on the floor as the driver slams on the brakes to avoid hitting the studio wall that is out of the shot, while the audio suggests the car is still accelerating. (00:03:40)
Revealing mistake: When the Batmobile emerges from the Batcave for the first time, the guard rail lays down and the car turns toward our right, disappearing in a cloud of dust. Watching carefully reveals the dust is being kicked up because the car was over-accelerated by the stunt driver, and spun out, heading back into the roadside brush. (00:03:45)
Revealing mistake: When Batman brings the Penguin to the Batcave the Batmobile skids to a stop on the gray floor. It then begins to rotate in the next shot and it's now on a black platform. When the Penguin emerges from the car and walks toward the rear of it, the platform is obviously gone. (01:06:10)
Revealing mistake: The swords and wrench used in the final fight were poorly made rubber items as they shake and bend whenever they hit something.
Revealing mistake: When Robin is trying to get the sub to surface using Bat Depth Charges, the sub is rocking violently. The rack that contains the vials with the Security Council's dust not only sways back and forth, but lies nearly flat several times, and always at impossible angles. This goes against physics, and gravity. The rack should have fallen off the table more than a few times.