The positions of the sun-visors on Michele's car change between shots at the end of the film.
When the hospital guard puts two bullet holes in the rear window of Alan's care, it is clearly a studio effect as the holes move with the camera.
In the immolation scene, the mask and gloves of the stuntman's fire suit are clearly visible. Also, the nozzle of the fire extinguisher being brought to the set can be seen in the last two frames before the Brodnek character enters..