Goof: When Speed Buggy is tipped over on the crane and is rolling toward Captain Scheemo and Cormack, Mark was seated in the front and Debbie in the rear. But when Speedy sneezes and blasts himself into the air, Mark and Debbie have switched seat positions.
Goof: When the gang first encounter Jerick as he traps them, faraway shots of Mark on Speed Buggy show him wearing his racing helmet, but closeup shots have him without it.
Goof: After a giant Jerick grabs Debbie and Mark and holds them in his hand, the latter's hair is brown instead of black.
Goof: In the final scene, Debbie is seen in the rear seat where Mark was originally seated prior and there was no indication they switched. Then Speed Buggy, still affected by Tinker's changing ray, hiccups, causing his tires to grow. But the final shot uses the ending clip of the series pilot Speed Buggy Went That-A-Way, as it shows Speedy's tires at their normal diameter, as well as wearing a cowboy hat and Mark is driving instead of Tinker, who's seated in the rear as the car is bucking around like a horse.
Goof: The giraffe makes a birdlike noise even though technically it shouldn't make any. The zebra whinnies like a horse, and the elephant doesn't really sound like a real one either, and even jumps on a safe to bust it open. In real life, elephants cannot jump.
Goof: When the gang is locked in the Ringmaster's cage, one shot has Speed Buggy's mouth missing. In a later shot, Debbie's shoes are white instead of blue.
Dr. Meangreen bears a striking similarity to Reducto, a villain from the series Birdman, in terms of appearance.
Goof: The antenna of Speed Buggy's remote control alternates from left to right and even the top middle on several occasions in this episode.
Goof: Mark and Debbie are able to disguise themselves as Gold Fever's henchmen by spraying gold paint on their outfits. Somehow the paint vanishes from their clothes later on before they find themselves nearly captured by two of them.
Goof: When Tinker and Speedy take off from the start line as their race begins, the same cars racing against them (notice the numbers) pass the screen several times making it seem that there's more of them in the race.
Goof: Just before the gang meet Professor Grovac and Karl, Speed Buggy's mouth is missing.
Goof: A couple of shots of Professor Grovac show his moustache thick instead of thin.
Goof: In a couple of shots when he and Tinker are climbing Kingzilla to free him from the ropes, Mark's shirt collar is colored white instead of blue.
Goof: When the gang is in Taggert's office, the rear shots of Mark show his shirt collar colored white instead of blue.
Goof: When Debbie and Mark arrive as Tinker is calling them from the phone booth, they can easily hear him. When Tinker says he left Speed Buggy's remote control unit at the garage, Mark's lips don't move when he says "So?"
Goof: When Mark pulls the lever to open the automatic door to help the gang escape Dr. Kluge's lab, his shirt collar is colored white instead of blue.
Goof: When the gang leave the ranch to rescue Tinker, Debbie is sitting in the driver's seat. But as they go up the mountain, Mark is in the driver's seat instead with no indication they stopped, got off, and switched places.
Goof: Just after Speed Buggy agrees to drive the cattle to market, his mouth is briefly missing before the change to the next scene.
Goof: When one of the cattle rustlers tries to grab Debbie, Speedy (who's unoccupied) zooms to her aid. When he grabs the rustler, Tinker is sitting in the driver's seat. But when Speedy puts the thug on the conveyer belt, he's unoccupied again.