I used the 3M kit on a few cars and they came out great - but the first time I used it was on my X5 and I didn't do each stage for long enough and the results were not great. I plan on hitting the headlights again on the X5 with a new kit. The Jeep I did it on turned out amazing, clear just like new actually, I was really happy with the results. I just need to slow down a bit and spend the necessary amount of time on each stage with my drill and the sand paper, the extra time was key for the perfect job but I swear by their product.