Photos of the new BMW 4 Series leaked to social media. The BMW 4 Series is getting ready to appear in an unusual style. The grid designs of the German car giant BMW models are getting bigger and bigger. Already, BMW has given the signals that the new 4 Series will have a big grille with its Model 4 introduced at the Frankfurt Motor Show. After the photos of the BMW 4 Series have leaked to social media, it has become clear that the car will indeed appear with a 'large' grille design. In another leaked photograph, it shows the vehicle's rear lamp, again inspired by the BMW Concept 4.