The 2015 Cadillac XTS is a large luxury sedan sold in four main trim levels: base, Luxury Collection, Premium Collection and Platinum Collection. Standard equipment for the base XTS includes 19-inch wheels, adaptive suspension dampers with automatic leveling, xenon headlamps, LED taillamps, heated mirrors with puddle lamps, rear parking sensors, keyless entry and ignition, remote start, dual-zone automatic climate control, eight-way power front seats (with power lumbar control), a power tilt-and-telescoping multifunction wood-and-leather steering wheel, leather seating surfaces and 60/40 split-folding rear seatbacks. Standard technology features include Bluetooth phone and audio connectivity (for up to 10 devices), a new 4G LTE connection with WiFi hotspot capability, an 8-inch touchscreen that serves as the hub of Cadillac's CUE infotainment system, OnStar, voice controls and an eight-speaker Bose sound system with a CD player, satellite radio, HD radio, USB connectivity, an SD-card slot and an auxiliary input. The XTS Luxury Collection adds visible dual-exhaust outlets in the rear fascia, illuminated door handles, rain-sensing wipers, power-folding mirrors, interior LED lighting, extended wood interior trim, a heated steering wheel, driver and front-passenger memory functions, heated and ventilated front seats, a navigation system, heated rear outboard seats, front and rear parking sensors, a rearview camera and an automated parallel-parking system (front-wheel-drive models only). An optional Driver Awareness package for the Luxury Collection trim adds lane-departure warning, lane-keeping assist (FWD only), a blind-spot monitor, rear cross-traffic alert, forward-collision alert and a vibrating safety-alert driver seat. The Premium Collection comes standard with the Driver Awareness package, and it adds adjustable thigh support for front passengers, automatic adaptive headlights, a head-up display, an upgraded 12.3-inch driver-configurable gauge cluster display, a