The "55" is the only Premium Plus trim to get standard 20-inch alloy wheels. Otherwise, it essentially combines the powertrain of the 55 models with the standard features of the 45 Premium Plus, which is to say it has adaptive cruise control with traffic-jam assist, surround-view camera, lane-change assist, wireless phone charging, and 17-speaker Bang & Olufsen audio system of the 45 Premium Plus, but with the 335-hp V6 engine.
Wheels: 21" 10-Spoke-Star-Design Bi-Color Black, Tires: 21" All-Season, High-Gloss Black Exterior Elements, Black Grille, Black Front & Rear Bumpers, Black Roof Rails, Black Door Blades, Black Window Surrounds
Heated Rear Seats, Contour/Ambient LED Interior Lighting Package, Multicolor, 4-Zone Automatic Climate Control, Rear Door/Side Windows & Tailgate Sunshades, Front Seats w/Ventilation, passenger 4-way power lumbar
Bang & Olufsen Premium Sound System w/3D Sound, Heated Steering Wheel, Adaptive Cruise Assist w/Lane Guidance, Audi Phone Box w/Wireless Charging, signal booster, Topview Camera System, virtual 360 view, Illuminated Door Sills