When Hill and Renko answer the robbery call, the squad car they are driving is a Chrysler. When the robber fires the shotgun at them and they swerve to avoid being hit and wind up crashing through a sidewalk newsstand, the squad car that goes through the newsstand is a Dodge. A few scenes later the squad car is shown sitting amid the rubble of the destroyed newsstand - it is a Dodge, but a different year than the one that crashed into the newsstand.
When Henry is assembling bologna and cheese sandwiches for the hostage-takers, he leaves the red plastic wrapper on the bologna slices. They eat them anyway without seeming to notice.