When Cadillac introduced the CT4 back on May 30th, they only introduced the V-series version of the car. Today Cadillac unveiled the standard versions of the car in Sport, Luxury, and Premium Luxury trims.  Each one styled slightly differently, the Luxury and Premium Luxury models come with brighter exterior accents and metallic grilles.  The Sport version is has a more aggressive mesh grille, sportier fascias, rear spoiler, darkened accents and model specific 18-inch wheels.  CT4 Luxury:

...Introing the base model to the world...