Continuity mistake: When Tracy and Bond are talking in the casino, and Bond tells her to stay on 5, she has her left hand resting against her chin. As she says "people who want to stay alive play it safe" she moves her hand down to the table, but then when the camera cuts back to Bond the reverse shot of her shows her hand still by her chin, and then she moves it down again. (00:13:30)
Plot hole: Blofeld tells Bond that he realised he was not the real Sir Hilary Bray when Bond told him that the Bleuchamp tombs are in the Augsburg Cathedral. Blofeld informs Bond that they are in-fact in the Saint Anna Kirche, and the real Sir Hilary Bray would've known this. However Bond had gotten his information about the Bleuchamp tombs in Augsburg from the real Sir Hilary Bray earlier in the film. (01:19:05)
Continuity mistake: When Bond started his escape on skis he has laced ski boots. When he throws the guy off the cliff and resumes skiing, he has buckled boots.
Other mistake: In the bobsleigh chase, when a grenade rolls around Blofeld's feet the rear projection FX suddenly swaps from showing a tunnel to showing a landscape going wildly in circles, as if the bobsleigh had crashed. However, on the following shot the bobsleigh is sliding along the tunnel normally and the rear projection plays the tunnel projection as if nothing had happened.
Continuity mistake: During the ski chase it starts off with Blofield and five henchmen, after one gets killed by the snow plough they stop and there are now six henchmen when there should be four. Through out the chase all of the long shots only show six in total.
Other mistake: During the stock car race towards the end, the henchmen sitting in the front right of the Mercedes starts shooting out of the window. He shoots forwards, but Bond is on his left with a white Ford Escort in between them. He somehow manages to hit Bond's car - we see it and hear a ricochet. He shoots several times but always directly in front of him. Bond's car is always on the left, continuous scene.
Continuity mistake: When Bond is fighting the villain on the beach in the pre-credits sequence, the two fight in the sea and Bond's hair gets wet in the process. But when Bond says "This never happened to the other fellow" his hair now appears to be completely dry.
Continuity mistake: When Bond and Che are fighting, Che knocks out one of the white wooden bars behind Bond. However, in the next shot, two bars are missing on the upper half of the wooden structure, one on the bottom half. Seconds later, just before Bond throws Che into it, the bottom half of the structure is complete again, and only one bar is missing on the upper half. (00:14:15)
Other mistake: In the bobsled chase, Blofeld arms a grenade, which drops to the floor of his sled, where it rolls around with every turn. He arms and throws a second grenade onto the track, where it is detonated by Bond's sled. The original armed grenade loose in Blofeld's sled never detonates, even when that sled crashes.
Other mistake: As the assault on Piz Gloria begins and the helicopters approach the facility, on the right of the screen one seems to be hovering near the helipad as another passes behind it. The helicopter in front fades to a slightly different position as the one passing it disappears and reappears several meters ahead. On the left of the screen the third helicopter appears out of thin air. (This was obviously caused by a dissolve effect, but since the sound effects are constant there doesn't seem to be any indication that a visible edit or time shift was intended for this scene, so it's a mistake). (02:06:00)