Solvent Retention: Description
WARNING: This page is about a different car, the 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
Bubbles of solvent retained in the clear coat, usually close to the surface and in localized areas, of a size between 0.5 and 1 mm (0.020 and 0.040 in.) diameter. May initially be apparent as black dots, but close examination will reveal the depth at which they are held in the clear coat.