The Return of Wonder Woman - S2-E1
Factual error: When Steve gets attacked by the bad guys and Wonder Woman shows up, the lady in the car pulls out a camera and films the event. She sits still, the car isn't moving, and she does all the filming from the same position. However when she watches the playback, the film shows footage from multiple angles and varying distances, which is impossible because she and the camera were in the same spot the whole time.
The Last of the Cybernauts ...?? - S1-E3
Factual error: When Kane pushes the Range Rover into Gambit, the hand print in the Range Rover's boot looks more like it was made in clay, not the steel panel of a car (which would have simply dented).