I installed this on
Volkswagen Jetta

Review
Did this on the windscreen front and back and also the front windows of the car. Good stuff, the water droplets do flow off faster and vision is clearer. For those guys that experience the wipers juddering/jumping, do try to apply again and buff off cleaning. That will prevent the juddering.

What I like
clear vision

What I do not like
must buff off cleanly or your wipers will judder due to the uneven surface. ie smooth to not-so-smooth and back to smooth.