This Police Cruiser is a law enforcement version of the Bravado Buffalo, previously available in The Ballad of Gay Tony's multiplayer and in GTA V, and due to appear in Grand Theft Auto VI. The emergency-class sedan resembles the Dodge Charger Pursuit cars operated by the New York Police Department, right down to a near-identical livery.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.