Revealing mistake: When Oddjob throws his hat at the statue and the head comes off the head falls on top of the arm and breaks it. Obviously this was not meant to happen as there is a quick edit in the film before the arm falls completely off (notice the trees behind the statue suddenly freeze).
Character mistake: Goldfinger is holding a S&W .38 in his plane. Bond says (in his explanation about shooting guns in planes), "That's a Smith and Wesson .45."
Audio problem: Bond's tires squeal as he brakes hard on the gravel/dirt road during the car chase in the woods near the factory.
Suggested correction: Yep, happens all the time, depending on how firm the road is.
Revealing mistake: Bond's unconscious body falling out of the car at the end of the car chase is obviously sped up.
Continuity mistake: After Bond has wrecked Tilly Masterson's car, he takes her to a gas station. At the gas station, there is a orange camping tent visible in the background, When Bond leaves the gas station, the tent is suddenly gone.
Factual error: According to Bond's radar map, Goldfinger is driving north of Geneva. There aren't any mountain passes north of Geneva. The whole sequence (involving the murder attempt by Tilly) was filmed between the Furka Pass and the town of Andermatt.
Continuity mistake: The Falcon Odd Job is driving with the crushed Lincoln has whitewall tires when leaving the scrap yard but when he returns to the farm it has blackwall tires.
Continuity mistake: The first time we see Goldfinger by the pool, in the wide angle there's a girl with an orange bathing suit, and a man with a striped shirt next to her. In the close-up, the man now has a white T-shirt with a blue print, and the girl has a white bikini and an orange skirt.
Continuity mistake: By the pool, Bond is given a note by an agent. The way he holds the note changes between shots.
Continuity mistake: During the pre-credits, the amount of soap on the back of the girl that was taking a bath changes between shots.
Continuity mistake: During the pre-credits, Bond lights his lighter to check his watch before the explosion. In the close-up he lights it again.
Continuity mistake: During the pre-credits Bond enters a room and his hands are spotless. In the close-ups of him placing explosives they're very dirty.
Continuity mistake: When the head of the statue falls on the ground after being decapitated by Oddjob's bowler hat, the head is now bright white and no longer matches the colour of the original marble.
Continuity mistake: When Colonel Smithers says "That's not quite fair" during the dinner sequence with Bond and M, the position of Smithers' hand/cigar jumps between shots.
Continuity mistake: When Bond is knocked unconscious by Oddjob in Goldfinger's suite, the robe-knot on his dressing gown changes when he regains consciousness.
Audio problem: When Goldfinger is explaining his smuggling operation, his mouth doesn't move until right at the time he coughs.
Visible crew/equipment: When Oddjob loses the trunk, the film crew is reflected.
Continuity mistake: As the vault door closes the shadow of the running man can be seen at the door, which was still open enough to get through. Inside the vault, he just reaches it as it shuts.
Revealing mistake: As the laser cuts through the table towards Bond, the line where the cut is to appear is visible.
Visible crew/equipment: As Bond stands by the back of the car Goldfinger approaches, the reflection of the camera crew and equipment on the trunk can be seen.