ΔE 7.2, close: similar, with a visible difference side by side. Neutral Gray is more muted than Faded Gray (Blassgrau).
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Neutral Gray is more muted than Faded Gray (Blassgrau).
The same difference applies the other way round: Faded Gray (Blassgrau) is more saturated.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Faded Gray (Blassgrau) on the colour wheel See Neutral Gray on the colour wheel
All matches: Faded Gray (Blassgrau) equivalents · Neutral Gray equivalents