"Upper grille" refers to the opening at the front of a vehicle where air flows in to cool the engine. It is usually located above the bumper and may have a distinct design. Full definition
The front fascia features a new, more prominent lower grille and the hood extends down and over the leading edge of a narrower upper grille. (thetorquereport.com)
All models have a new front fascia design, while each specific trim level has its own upper grille design. (automobilemag.com)
The front - end features a large upper grille and a new lower grille with three sections. (indianautosblog.com)