Mine has mirrors on both sides of the car but, they are mounted on the doors, just outside the wind vents. (Mounted on the flat metal at the base of the vents. Not on the angular part of the window frame.)
BOTH of the mirrors seem useless where they are. They can't really be "aimed" correctly to see out the back. The one on the passenger side cannot be turned "in" towards the driver far enough to see straight back. It's looking at the ditches on the side of the road.
It could be the mirrors themselves but I suspect it's the position of them. The one on the passenger side is almost impossible to see through the vent window.
Any advise would be appreciated.