Continuity mistake: When the guy paints the ambulance green the paint disappears between shots. The hood is painted, then it's not, then it is. And it goes from a few sprays to the entire hood in the time it takes Jake G. To move from the driver's side door to the front corner of the ambulance.
Continuity mistake: ,After Cam sprays Will and Danny with the fire extinguisher, the amount and locations of foam/chemical powder on Danny, in particular, changes a few times, even covering a much larger area of his face/clothes and being thicker after he got out of the ambulance. Will was sprayed first and longer, but his face/clothes looked practically spotless. The interior of the ambulance did not show signs of a fire extinguisher having been recently sprayed. (00:46:29 - 00:47:13)
Continuity mistake: While Danny is talking to Castro on the phone, the ambulance is driven through the roadside kiosk, scattering merchandise (e.g, hats, flowers, fruit). The camera shifts and shows the ambulance back further - just about to emerge from the scattered products. (00:59:10)
Continuity mistake: The time of day changes multiple times during the first half of the movie. When Danny is talking to Papi, Papi is outside and the sun is in the west indicating late day. In Danny's angle the sun is right overhead. There are multiple times when it is full on overcast in one angle and cloudless blue sky in the next.
