How long ceramic coating lasts on a car ultimately depends on how you use it. If your car is mostly kept indoors, covered, and only driven in gentle conditions, your ceramic coating could last several years.
The following conditions can cause your ceramic coating to wear down sooner:
If you want to prolong the life of your ceramic coat, do your best to protect your car from the elements and ensure your car is washed gently. If you drive your on the highway or in harsher elements often, the effectiveness of your coating might last closer to two years.
Good luck keeping your Mustang beautiful!