When Hawke backs his truck into Bishop and Nolan's squad car, the car's lights are off and the wipers down. The second scene shows the headlights on and the wipers at half-mast.
During the pursuit with Hawke, at the beginning when just Officers Nolan and Bishop are behind him, the vehicle they are driving changes between shots, as is evidenced by the emergency lights on the front grille/push bar (some scenes show a solid red lamp on the bumper while others show flashing red/white in the grille). See also general series goofs regarding emergency lighting.
The police car used by Nolan in the pursuit of Hawke is the same he crashed into earlier. The blown airbag and damage to the car have disappeared. The driver has a worn seatbelt, which is visible before the crash and in the pursuit.
When Hawkes backs into the patrol car, the airbags blow up. Airbags do not blow up on impact when there is no one in the seats.
When the detectives are interviewing Nolan in the break room, "harassed" is spelled incorrectly on the poster on the bulletin board in the background as "harrased".