When the Camaro skids through an intersection to turn right, it almost collides with a yellow car, which has to brake and skid to avoid a collision, yet when Ponch and Jon give chase to the Camaro, the yellow car is nowhere to be seen.
During the flashback karate fight scene at the beginning, one can see it's a stunt double for Ponch. The double's face is briefly seen as "Ponch" does a spinning kick.
The initial pursuit of the Camaro from the vandalized Hispanic gang territory goes for a considerable distance. No other vehicles are seen following Jon and Ponch, yet the Hispanic gang walks up moments after Jon and Ponch confront the karate gang after the Camaro stops.
After the initial pursuit, Jon and Ponch practice terrible officer safety techniques. Officers are trained to deal with armed suspects by an equal or greater use of force and to not allow suspects to stand behind them. The presence of weapons and multiple suspects aggressively displaying them would have resulted in the officers being justified with using deadly force, however Jon and Ponch never drew their guns.