When Ajay enters from his jeep some 2 goons are about to shoot him but they disappear in next shot.
Akshay's hair color at times has white shades while at times it's black.
When Akshay and Abhimanyu Singh are fighting, Akshay's sunglasses disappear in middle.
It is said many times in the movie that there are 40 terrorists but at the climax fight it can been seen that they kill way more than 40 terrorists.
When only 22 seconds are left for the time bomb to explode, Katrina suddenly informs Akshay that she is not leaving anymore. Akshay starts celebrating by hugging her. Then Ranveer asks where she was supposed to leave for. Then Ajay reminds all of them that they are all supposed to leave for heaven so soon. So Akshay again started defusing the bomb & the timer shows 18 sec.left. So this whole conversation took place in 4 seconds only.