During car chase at about 1:02:50, the Dodge Charger spins out and Officer stops behind. When Officer gets out of police car, he has no Sam Browne duty belt. In fact, he doesn't even have a gun from interior camera view. In next shot from exterior of car, he has belt on and is drawing down on suspect.
At about 1:07, Nick and Viktor are in the back seat of a car together. Viktor is on the passenger side (left) and Nick is on the driver's side (right). When the people in front look in the rearview mirror, the image shows Viktor on the left and Nick on the right, but since it's a mirror, the sides they are on in the image should be reversed.
When Barrow is applying for the life insurance, he wants to prepay the 'taxes' on the insurance proceeds. Two things: taxes aren't paid at the insurance office and, most likely, the death proceeds from a life policy would not be taxable.
When Keenan's men are looking at Cate's police record on the computer, it lists her height as 5'11" but the accompanying mugshots show her height as closer to 5'7". Furthermore, at the start of the movie, in the flashback scene of Cate being booked into arrest when those mugshots are taken, her height is between 5'9" and 5'10".
Kates friend loans her a getaway car, 4 door Honda, as she drives thru town to pick up her father the car has black custom rims. later as she is driving her father she slams on the brakes, in the external shot we see the car has stock hubcaps, after letting her father back in the car we see the car is back to sporting the custom rims.