Factual error: Tom Cruise says of the song 'Sitting on the Dock of the Bay' "my folks loved it". However, his father died in 1965, his mother died "shortly after him", and the song wasn't written until 1967.
Factual error: It's late 18th, possibly early 19th century and, as Jane and her sister walk along the beach, a construction crane is visible on the horizon.
Factual error: The movie and events take place in 1958. However, two Fender amplifiers that are used by the band, "Johnny Casino and The Gamblers" are "Silverface" models that were only manufactured between 1967 and 1981.
Factual error: Near the beginning of the film before James McAvoy heads up to the house for the evening meal, he is seen looking up through a skylight when a Lancaster bomber slowly flies overhead. At the time it was was supposed to be 1935. The Lancaster bomber did not fly until the beginning of 1941. Can't be an Avro Manchester either, they only had two engines and first flew in 1939.
Factual error: Billy Bob Thorton wore a uniform with a Louisiana state patch on it. All of the cars have Georgia license plates.
Factual error: When Preach hears Cochise is in trouble, he is shown running down a street looking for him. In the driveway of one of the houses is a maroon 1973 Chevrolet Monte Carlo, but the movie takes place in 1965. (01:03:15)
Factual error: During the 1972 New Year's Eve celebration, Forrest drinks a Dr. Pepper with a logo that wasn't devised until around the mid 80s.
Factual error: The film is set in 1997. There is a scene where Amelie knocks on a house door and in the background is a new model VW Beetle. These weren't available until early 1998. You can also see several scenes with various new models of Fiat Punto and VW Golf which weren't available until 1999. (00:19:00)
Factual error: A native French speaker like Monique would never mistake the word 'testicle' for 'tentacle'. The French word for 'testicle' is 'testicule' and the word for 'tentacle' is 'tentacules' - both are pronounced almost identically to the English form. She'd have to confuse the two words in French, and not even a non-English speaking French person would make a mistake like that. Monique's English is very good. She'd be perfectly aware of what she was saying.,.
Factual error: Jonathan is lying in the middle of the skating rink when the second cashmere glove falls upon him. Looking around, he notices Sarah at the edge of the rink. Despite Sarah being a female and the fact that it is snowing, even Nolan Ryan would have a difficult time throwing something as light as cashmere that distance. (01:22:05)
Factual error: There is a brief shot of a couple driving through the streets near Eatonville, Florida. In the background a mountain is visible. There are no mountains in Florida.
Factual error: If you take the train from Paris to Cannes you won't pass the Eiffel tower.
Factual error: In the scene where we first meet Rosie, it opens with a shot of the house and then goes inside, passing by some pictures of Rosie and her husband. One of them, a picture of their wedding, says "Frank and Rosie - Wedding 1948", but then when Rosie is talking about how her husband will know how much she still loves him after all those years, Robbie says that he hopes that he and Linda will be as happy as Rosie and her husband on their 50th anniversary. If they got married in 1948, they would be closer to their 40th wedding anniversary. Since the movie is supposed to take place in 1985, this would actually be their 37th wedding anniversary. (00:12:10)
Factual error: In the scene where Taylor is trying to prove to Gabriella that Troy is a dumb jock who doesn't care about her, Troy is in the locker room with his friends. Troy's friends are recording Troy on a camera attached to a PC, and the image is seen on Taylor's PC. The message on Taylor's PC says an incorrectly spelled 'Recieving WiFi Signal' instead of 'Receiving'. (01:00:55)
Factual error: The sun can't rise out of the Pacific ocean when viewed from America, as seen when Danny is playing the clarinet. (00:01:20)
Factual error: When Reynolds is pulling up to the gas station headed to the countryside, you see a blue Michelin sign on the left against the gas station's building. The 'Michelin Man' logo style seen on the sign was not in use until the 2000s. The movie takes place in 1950s. (00:11:50)
Factual error: The movie is set in the 1860s. During a performance for English guests, Anna has the King's children perform "Bicycle Built For Two". That song, otherwise known as "Daisy Belle" was written by Harry Dacre in 1892. (00:57:50)
Factual error: This movie takes place in 1990, but that big 'Welcome to Daytona Beach' sign was not built until 2001. (00:21:05)
Factual error: In the scene where the camera shows Times Square, visible on the right of the screen in the front of the shot is a poster for the Broadway show "The Lion King". The Lion King just celebrated 10 years on Broadway and was not playing in 1994.
Factual error: At the art exhibition, Eleanor wears a plastic name badge which looks rather modern for this period. (00:36:15)