Factual error: There is no physical way that Steve Austin could perform most of his superhuman feats of strength in the ABC television series, due to the fact that they simply replaced his arm and legs, but didn't rebuild or reinforce the rest of his skeleton and muscles to handle the physical loads. Interestingly, author Martin Caidin (creator of Steve Austin in his novel, "Cyborg") actually did describe an incredibly complex whole-body rebuild that included vertebral reinforcement and ribcage and pelvis replacement, which was far more scientifically-accurate than the subsequent ABC television interpretation. ABC only accepted the series on the condition that it was less technical for their audience.
Steve Austin, Fugitive - S2-E22
Continuity mistake: The background behind Hopper while he is in the man lift changes from shot to shot. In the close ups of him in the man lift's basket, there is a striped wooden wall, but the long shot of the man lift in the raised position shows an open wooden railing behind it.
Revealing mistake: When Major Popov aims the rocket launcher at the Venus probe, there is no rocket in the launcher- it is just an empty tube.
Just a Matter of Time - S5-E13
Other mistake: In reality, Steve would radio in from the capsule as soon as he woke up on Earth, but strangely failed to do so until later in the episode.