Now it's time for 'SPECTRE'! See anymore? Add them here!
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There's no good reason for Hinx to attack Bond on the train. Blofeld was expecting him to turn up at the crater, that's why he sent the car to pick them up.
When Hinx appears in the dining car on the train, the rest of the passengers in that car immediately disappear. Also the barman when they enter that part of the train and the kitchen staff too.
During the plane/car chase scene the plane rams the back of the range rover and we see the nose crumple as it should. In all the shots after this the nose is perfect, but the back of the car is still smashed.
In the plane chase scene, when the plane hits the car, one of the wheels comes off. In the next view, all the landing gear is intact.
When Bond and Dr. Swann make out on the train there are lights "flashing" in the room as if the train is passing streetlights. But they are traveling in the desert with no external lighting.
The winter car chase in Austria shows the Range Rover's license plate "IL 25768H" which stands for "Innsbruck Land" in the province of Tyrol, but the flag in the middle of the plate belongs to the province of Vienna. It should show the Tyrolean eagle. In addition it contains too many characters.
At the funeral in Rome the bars of sunlight on the wall behind Monica Bellucci change length through the conversation. The time of day for each shot must have varied quite considerably.
M drives a 2006 Jaguar XJ, which is rammed sideways into a concrete wall by a black pickup truck. Such impacts would fire both thorax and curtain airbags on both sides of the car; these would be visible in the wreck afterwards, as limp sheets of cloth dangling down the sides of the seats and door, respectively. Without such protection, M and Bond would be severely concussed, and unable to operate. There are no bags.
Bond gets into M's Jaguar XJ through the left hand rear door, but within minutes, Q is alone in the back seat, while Bond is in the left front seat.
When Bond's plane crashes head on into the Range Rover Sport, Hinx smashes through the windscreen, which shatters into small granules of glass, and lands on the bonnet. This would be quite realistic in the 1960's, but modern cars have laminated windscreens, seat belts, and large passenger airbags. Even if he undid his seat belt to shoot at Bond, or didn't wear it in the first place, the other two safety features would have kept him inside the vehicle. Not quite so dramatic, of course.
The sealed off room in the L'American hotel is a fantasy. For one, a maid or the owners should spot that a room is missing from their own hotel. Secondly, we know that Mr. White visited frequently, and as recently as the events in Casino Royale as evidenced by Vesper Lynd's interrogation tape. Whilst it's conceivable he was able to secure the same room every year, that he was able to replaster and repaint the wall as well stretches belief.
The Aston Martin DB10 does not show a front licence plate, but it is required by law to show one at the front and back of the car in England and Europe.
The 15 bus in London does not go over Westminster Bridge.
Bond fights the two guards at the clinic and goes outside to get Hinx. At this point he is now suddenly wearing very dark sunglasses.
Thanks to http://www.moviemistakes.com/film11259
Some great observations here that make no sense in the film at all.