An establishing shot shows an arriving airliner over a sign that reads "Newark Liberty International Airport." However, the story is set in the late 1980's when the airport was named "Newark International Airport." "Liberty" was added to the name in 2002 after 9/11.
Javed listens to Bruce Springsteen's version of "Because the Night," a song he co-wrote with Patti Smith who Smith recorded and popularized. The film is set in 1987-1988. But the studio version of the song we hear was not released commercially until a 2010 compilation.
Although the cars depicted on the street scenes and the estate parking lot where Jaaved's home is are correct for the era the film was supposed to have taken place in, they are all in pristine condition, which is unbelievable given that the salting of roads in Britain led to early rust out of cars only a few years old. This is most obvious by Javed's father's car - a thirteen year old Vauxhall Viva with not a spot of tin worm on it.
When Javid picking up the NME at the newsstand there's a Number One magazine on the shelf too. This is the issue dated 21st January 1984 with Frankie Goes To Hollywood. It seems unlikely the vendor would have a 4 year old issue on sale.
The estate they live on has LED street lights which were not around back then, also every scene showing the M1 motorway, even though it's slightly blurred out you can obviously see they're all modern vehicles.
The DJ is playing Tiffany: I Think We're Alone Now in Nov '87, but it didn't reach the UK charts until early 1988. He also talks about people wanting to hear Bros. They didn't have their first hit until 1988 with When Will I Be Famous. Their first single I Owe You Nothing entered the UK chart on 28th November 1987 at Number 81.
The American flags hanging on the airport walls are displayed incorrectly. When displayed vertically against a wall, the union (blue field) should be uppermost and to the flag's right, that is, the observer's left.