When Sonny goes outside to the parking lot to wait for Leroy to show up with the car, his jacket is totally clean with no blood on it. In the shots immediately before and after this, his jacket is spattered with blood on the left shoulder.
In the last scene, once the rain stops, the car's windshield goes from streaming wet to very dry in seconds.
When Sonny has sex with Monique, you can hear him ripping her pantyhose apart at the crotch. In all the following shots the pantyhose are undamaged.