Up-front cost. While a coating may provide many benefits, the up-front cost is prohibitive to some. However, when calculating a prospective clients time, energy, product expense, or the cost of having a detailer wax or seal a vehicle 2-4x per year, the cost of a ceramic coating can be significantly less over the life of a vehicle.
Ceramic Coatings, like any other surface on a car, are susceptible to water spotting from hard minerals from many water sources. Only washing the vehicle in the shade, early mornings, or late in the evenings in hot climates helps. Using good quality microfiber towels, a leaf blower or air compressor to help dry the vehicle quickly can help as well. Water spotting can be removed safely from most coatings but are not covered under any known coating warranty or guarantee as they are preventable.
Ceramic coatings can still be scratched and chipped. While some coatings do provide a measurable degree of hardness vs. factory clear coat, no coating is scratch or chip proof. This is a common misconception that is regularly spread by many dealerships and even some detailers looking to make a quick sale. Paint protection film will aid in preventing chips, and Flawless Coating and Detailing offers paint protection film installation as well.