I've owned my 2014 Impala LS for a couple of months now and like almost every aspect of the car very much but I'd like GM to address one important safety concern.
The standard halogen projector headlights on the Impala rely on a single light source with a shutter to control switching between high beam and low beam -- a method more normally reserved for HID installations. The problem with the system is not so much the intensity of the light produced (which is not great), but its beam distribution. On both high and low beams very little light is dispersed to the front sides of the vehicle and on high beam the long distance component of the light is very narrow -- approaching a pencil like distribution with limited scatter to the sides. This means that sharp right turns are very tricky (you cannot see the side of the road to the right as you make the turn) and any pedestrians to the side of the vehicle at an intersection are invisible. The narrow beam distribution is also far from ideal for winding country road driving at night. This is not the case with our 2003 Malibu, for instance, which has separate reflector main and low beams, and throws quite a bit of light to the sides. It was also less of a problem with the 2013 Malibu I drove recently, which has projector low beams and reflector high beams.
A fix may be as simple as redesigning the projector lens to throw more light to the sides of the vehicle or installing supplemental cornering lights, but ideally the system should have a stronger light source too. The status quo is not satisfactory and potentially unsafe. With so much riding on an otherwise excellent and modern vehicle, I hope GM is responsive in addressing this issue with a design change and a speedy recall to fix the existing fleet.