Gallery: The evolution of BMW's 'kidney' grille

The reveal of the new 2021 BMW 4 Series Coupe, due to hit local showrooms in 2021, has sparked debate surrounding its large 'kidney' grille. Long a signature of the BMW brand, the 'kidney' grille has evolved over the years, starting life on the BMW 303 (below), the first car to sport what is technically called a bifurcated grille. Over the intervening decades, BMW's signature grille has evolved in design and shape, as well as size.