(at around 55 mins) Chris is watching the guards leave on the monitors, the clock above shows 8:06. He then hears the boys breaking into the cash house through the roof, he gets up from his chair, looks back at the monitors, the clock now shows 8:04.
In the car park shoot-out, when the robber in the green top is lying injured on the ground, his position keeps changing between shots.
The size of the suitcase supposedly holding eight million dollars for the Colombians is far too small. It would take 8 suitcases the size of a Halliburton bag to hold 8 million dollars in hundred dollar bills.
The New York State License plate displayed on the Firebird was not released by the New York State Department of Motor Vehicles until 2010. To be accurate for the period it should have been a solid yellow license plate with blue lettering. The plate featured in the movie is known as the Nostalgia series.
In the end credits the word "Colombian" (as in the characters #1 & #2) is misspelled both times "Columbian."
The Greek flag in Chris' room is hanging on the wall vertically: a proud Greek would of course hang the flag horizontally.
The shirt Liam Hemsworth wears while being questioned by Spiro had the button straps on the sleeves, which weren't around until after 2001.
Between the time Chris entered the security code and gate opened and receiving the call from his boss there was a very short time (about 10 seconds), then considering of the continuity of the scene; it's not a reasonable time to his boss to receiving an alert call from police and making a call to Chris.
The story is taking place in the early 1980s (based on a real robbery that occurred in 1982) but the Armored vehicles used in the film are Ford F chassis that are too new for the time, having been 1995 or newer Fords.
Both letters that we see (Chris's letter from the NYPD and Tony's wife's letter about insurance) were clearly printed on an ink-jet or laser printer. In 1982, these letters would have been typed.
Detective James Ransome is watching Chris and Eddie in the car park following the robbery, he's wearing a late model G Shock watch. G Shocks were invented in 1983 but the style of watch was square until 1990.
In 1982, all NYPD officers carried revolvers. Dwayne Johnson is carrying a Beretta 92FS. While available in 1982, automatics weren't authorized by the NYPD until 1986.
When some of the stolen money is shown, it is in the $100 bill that wasn't minted until 1996.
Speaking with Mike in the car Eddie says if he kills him he will tell Spiro about Jimmy. The question is that if Mike kills Eddie Right at that moment how he will tell anything to anyone.
When Jimmy is shot - looks to be in the face - he ends up on the sidewalk lying mostly on his left side & legs slightly bent, yet only seconds later after Eddie has gotten in Mike's Cadillac Eldorado & they leave, Jimmy is positioned in the classic "neat layout" so common in fictional depictions - lying completely flat ("prone position") with legs straight out & arms bent at the elbows in a perfect triangle.