Continuity: George McFly's holding a pen in his right hand, then a cut to a wide shot reveals him not holding a pen as he rests his arm away from his body on the table. Then when the camera cuts back his arm is back in front of him holding the pen.

Continuity: When Marty gets out of the DeLorean to look at the "Lyons Estates" markers it is supposed to be a little past sunrise. The shadows should be very long, but all of the shadows are small. The scene must have been shot much closer to noon.

Continuity: When Marty is playing at the dance the picture on the guitar disappears in some shots.

Audio problem: When Marty's band is auditioning at the beginning of the movie, the drummer's hands are inconsistent with the drumming sounds. Especially obvious when they get cut short and we hear a mini drum roll, which the drummer definitely doesn't play.

Continuity: When Marty is being chased on the skateboard in 1955 he skids rounds a corner and you can see that this scene had been shot before as there are skid marks there from previous takes.

Continuity: When Marty is at the Enchantment Under the Sea dance and is about to disappear, he puts up his right hand and it starts to disappear. On the very next shot of him, he is putting down his left hand.

Continuity: When the DeLorean sets off for the lightning strike, you can see it leaving tracks and spray on a wet road, later there is a close up of one of the wheels, which shows the road to be dry. Throughout this scene the road appears to alternate between wet and dry, during what is supposed to be a storm.

Continuity: Beginning of film. When Marty arrives at Twin Pines as the Doc requested he cruises up alongside Einstein on his skateboard, saying "Where's the doc, boy?" There's a cut to the truck opening, then back to Marty, and for some strange reason the yellow wheels on his skateboard have turned pink, but the reflection on the wet car park is still yellow. It cuts back to the DeLorean coming out of the truck then back to Marty, and his wheels are yellow again. This doesn't happen in the VHS version.

Continuity: During the Johnny B. Goode song, the mike cable's position keeps changing depending on the shot, despite no-one touching it.

Revealing: Right before the white smoke shoots out of the time machine after Einstein came back from the future in the beginning of the film, you can see the 2 fire extinguishers built in to shoot out the "smoke".

Continuity: In the scene after Marty returns to 1985 he jumps out of the DeLorean to verify he's back and then jumps back in the car to go save Doc at the mall. In the shot where he's putting the car in gear, you can read part of the yellow "Last Time Departed" display on the time circuits as "1985, 1:20AM", and in the shot where he's trying to start the car, you can read "Oct". It should read "November 12, 1955, 10:04PM" since that was the time he just left. On top of all that, the display appears to relate to when Einstein traveled a minute into the future (you can see when Doc shows Marty the time circuits after he lets Einstein out that the "Last Time Departed" is "October 26, 1985, 1:20AM"), not when Marty traveled back to 1955 (October 26, 1985, 1:35AM). You could argue that the "Last Time Departed" display is not working properly, but Doc uses Marty's last time departed (October 26, 1985, 1:35AM) to set Marty's destination time when he's returning to 1985.

Continuity: When the JVC recorder is first played the screen on the TV is a blue colour. Later when Doc is playing the Lybian part again and again the screen seams to be a brownish colour.

Continuity: When Marty arrives in 1955, he puts the DeLorean behind the sign, and walks into Hill Valley. When Marty and the 1955 Doc come back later, the DeLorean is facing the other way round to what it was at the beginning (you can tell because at the start Marty pushes the BACK of the DeLorean AWAY from the Lyon's Estates billboard, but when they come later, the FRONT is facing TOWARDS the billboard).

Continuity: Lorraine Baines' hands are on her hips, a brief cut to Marty and back and she now holding a cup and saucer at chest height. You could argue she had enough time to pick it back up, but this would seem odd as she's only just put it on the table.

Continuity: When Doc starts up the DeLorean watch the remote when he says to Marty "not me, the car, the car." The counter is static at 00 but the car is moving.

Continuity: At the beginning of the film, when sending the DeLorean into the future, the wide shot shows the DeLorean heading for Marty and Doc then disappears leaving a trail of fire. Notice the cut as the car park goes from being dry to wet with puddles.

Continuity: After the scene where Marty and his band are rejected from the school tryouts, Jennifer and Marty are sitting down and a lady comes by and asks them for change to save the clock tower. After they attempt a kiss, Jennifer's dad calls for her from the car. In the background, an African-American man is standing looking in the window of a building, and then walking right. In the next shot, he has moved all the way to the left and is walking right.

Factual error: When Marty McFly is being chased around the town square by Biff and his buddies in the black convertible, the car starts out as a 1946 Ford. In the shots where the car comes dangerously close to Marty, the front end of the car is a 1947-48 (parking lights on the '46 are rectangular and just to the inside of the headlights; on the 47-48, they are round and BELOW the headlights).

Continuity: When the Doc is trying to pull the cable to connect it the cable is stuck and when he pulls the cable hard the other connection breaks off. Watch when it breaks off you cn see that after Doc pulled it the cable gave him more length and would surely get Doc's arm to the other cable but when they show the Doc a second after he hasn't moved one bit.

Continuity: When Marty is running through the car park you can see a person in the background in one of the shots but they disappear in the next shot, then re-appear again.