Confusingly, fascia is used for two completely different things in the automotive world.
In British English, a car's fascia is its instrument panel and dashboard area - what lies in front of the driver and front-seat passenger. It is used primarily in enthusiast and specialist circles.
In recent American English usage, a car's fascia is its front-end "look" - grille, headlamps, front bumper, and other details. This area is possibly the most critical in defining a car's identifiable look, and is also the easiest to restyle when a car's styling needs to be refreshed. Again, this word is mostly being used by the auto trade and automotive journalists.
Fascia is composed of two layers, a superficial layer and a deep layer.
Fascia is a specialized connective tissue layer which surrounds muscles, bones, and joints, providing support and protection and giving structure to the body.
In homebuilding, fascia refers to the flat vertical surfaces of a house that lie between the roofline and the soffit or underside of the roof overhang.