Amitabh's hairstyle is different in several scenes, due to the three year time lag between shooting.
The Desoto's left headlight and fender is damaged. But in between shots, the Desoto is left intact, then damaged again.
Narang tells Don(Vijay acting as Don) that Dsilva stays on 8th floor and on 7th floor there are police guards but those guards never come in the picture when Amitabh falls off the rope and also when both fight.
Om Shivpuri's hairstyle changes from short to long in some scenes.
During the chase sequence at Silver Beach, Don arrives in a red Cadillac - yet leaves in a white Desoto in his escape.