(around 54 min.) The amount of sunlight changes while David clings onto a truck to escape from McKinney.
In the airport while David and Michael are saying goodbye, when the announcement for the North Carolina departure, a man with a green shirt and yellow shorts pass behind Michael and you the same man pass behind him again just before the cops get there.
The duct tape on the hostage's face, after it's torn away by Steve.
When David Ghantt and Mike McKinney encounter each other in the airport, there's a mother with a baby stroller behind David. By the time security arrives, the mother and baby have disappeared.
(around 54 min.) When the real Michael McKinney attempts to chase after David, cars are shown driving around - albeit the previous shot had people roaming the street.
David did not make it back to the United States on his own as shown in the film. He was actually arrested in Mexico after the FBI traced his phone calls.
When Kelly and David are at the shooting range, Kelly fires seven shots from her revolver.
During the March 1997 robbery in the prologue, a few of the cars in the parking lot are from the 2010s.
After Kelly fights Jandice in a clothing store, Kelly escapes and several contemporary cars can be seen from outside.
The camera crane is vaguely reflected on the new white BMW as it drives by.
The David Ghantt and Mike McKinney are in the airport, and police officers come in to arrest them. They both fight the officers and then run. David is then able to get on the plane and fly to the United States. There's no way the plane would have even been allowed to take off with him on board.
When David and Kelly are escaping the mansion, Kelly calls Scott's BMW Z3 a "BMW Miata". Miata is a Mazda model, not BMW.