I just had my S8 cermaic coated. Guy came to my house for a full detail and ceramic coat for $450. Couldn't NOT do it... Looks like a brand new car. Most people guarantee 2-4yrs on a coating. It sits in a garage when I'm not in it, so it will likely last 4-5 years...washing is effortless now...I will do my truck next and every car I own from here on out...#screwwaxing