There is an awful glare from any headlights behind me. the head lights from all the cars behind you go up and down in these huge streaks and it is usually the color of a rainbow. maserati says that is normal. it is definitely a safety hazard because it is hard to see behind you when you want to change lanes. i have never seen this on any other car. it is definitely from the rear glass, because i don't have that problem from the side view mirrors. you also notice it when you turn around so it is not the rear view mirror. they offered to put an anti glare protector on the rear glass. we tried it out but it didn't fix the glare. *tr