Car coatings, a subject that could be discussed until this time next year.
Nano technology is nothing new, it dates back almost 1000 years, obviously not known as nano then. The coatings are all polymer based, some have ceramic particles, but the difference is minimal.
The dealer offered coatings are absolutely fine, come with a 3 year warranty, but whatever coating you use there are conditions attached.
I think it's fair to say the end result may vary a little depending on preparation before application.
One things for sure, the only thing they will protect against is the most superficial of scratches, which still means the treatment needs treatment, all will be worthless against a supermarket trolley, or a zip on a jacket, handbag buckles etc.
As for cost, what's a few hundred quid when you've spent 40 to 60k. As for value, like all extras, it will add minimal value to your car.
I've had mine done, silky smooth surface, dirt doesn't stick to the wheels much, two grandchildren in the back, I'm sincerely hoping the leather treatment is as good as the brochure says.
The bit that annoys me is that you pay for preparation twice, you pay the dealer as part of the delivery/dpi fee. Then you pay to have it removed, prepared and reapplied.
Oh well, I suppose I had a choice.