Upon opening the sunroof while driving, the sunshade track bunched up and got stuck while opening. I was able to unbunch the track the get the sunshade to close, however, the fabric ripped away from the track on both sides. When the sunroof is opened, the fabric falls down into the car and completely blocks the view out of the back window. I tired putting the fabric up in the space it should roll into, but it will not stay and falls down while driving. I stopped using the sunroof for this reason. Now the fabric hangs down into the car. This happened almost a year ago. The fabric has continued to hang down further and further into the car. It is beginning to fall into the line of vision of the rear window. I used safety pins to hold it up, but it continues to hang down further. I have decided to get it fixed for this reason. It will cost almost $800 to have it repaired. This is clearly a safety hazard. I have read several forums on other owners with the same safety issue. A service repair bulletin has been issued for this problem, but it should be a safety recall.

- Louisa, VA, USA

The rear window is small and I depend on the back up camera but it is dark and I cannot see a person behind the car -- the dealership says that's the way it's made and GM goes with their dealership -- they're wrong -- tried to get it fixed several times with no luck

- Redfield, SD, USA

The design of the headlights is faulty. The reflectors behind the bulbs do not project sufficient illumination of the road ahead, nor does it illuminate the left and right corners. I estimate that the very dim lights are good for 30-ft ahead at most, and they are so dim that they are almost useless when driving in am and pm hours. Switching to high-beams barely makes a difference. In fact, I always drive with the high beams on when driving in the dark, and have never had an oncoming vehicle flash its lights at me in attempt to get me to swiych to the low-beams. Further, turning corners in the dark is dangerous, as there is virtually no illumination of the corners by the headlights. All of this is exacerbated significantly when the pavement is wet and when it's raining. I suggest that you take a test drive in one of these vehicles, in " country" environments that are not lit by street lights. Do it again on similar roads when it's raining. Search google "Impala poor headlight design" and you will find that this hazard is discussed in several forums and reviews for 2015 through 2018 Impala. It boggles the mind to know that General Motors has allowed this safety issue to be perpetuated through 4 Impala model years.

- Walton, KY, USA

I bought my car with 11K on it. It was a dealer used car that had never been registered for the road. I had a 2009 Cadillac, so this is what I compared this car too then. The passenger wiper blade has "scratched" the windshield where it stops to return back down. This has caused a permanent mark in the windshield, the length of the blade. This blocks your vision at the worst time; when it is raining or snowing. Next up are the safety feature control locations which were very poorly designed. There are 5? different ones. Two are on the left dash area, but obstructed by the steering wheel. Another one is on the steering wheel, next to other controls and I've turned it off by accident. There are others, not easily accessible, but you have to operate the driver info center by several clicks to access them. Not very consistent. The horn is more difficult to operate than any other car in my life! in the past, if you push the little horn icon, it blows. With this car, you must push at the bottom of the wheel; I found this out by testing it over and over. The horn will not work in an emergency situation by most people. Speaking of covered controls by the steering wheel, the start/stop button is obscured unless you turn the wheel or lean sideways. If you just pull into your driveway normal, you can't see it. The emergency 4-way flasher button is next to the start button, and is also obscured by the steering wheel. Electrical, minor but annoying issues include the HVAC system and music storage. This the the worst system I have ever seen. In almost any climate (40's down to below zero), I have to turn the temp from 90, down to 66 to stay comfortable. To use auto-start, I have to remember to preset all the controls how I want them set for the next morning! the audio makes up its own song lists. These things should not be on a 2015 car! I could go on even more!

- Racine, WI, USA

Sunroof exploded! I was driving my new, 3 week old, 2015 Chevy Impala ltz on the highway doing about 65 mph, when there was a loud explosion and my retractable panel of the sunroof had exploded, without cause, and blew outward. Fortunately there was no one else in the car as the passenger seat and rear seats were covered with shards of glass. The remaining glass in the frame was all bent outward which made it appear that there was an internal explosion to push most of the glass up and out of the car. Why the mfg doesn't use safety glass, like the windshield, instead of tempered glass which breaks into a thousand pieces is a major safety issue. Fortunately I was able to maintain control of the car. There was nothing that hit the sunroof glass, it just exploded on its own.

- Defiance, MO, USA