The LINCOLN Town Car is the highest-rated American car in the mid-luxury segment according to a J.D. Power and Associates customer-satisfaction study; 60 percent of all LINCOLN Town Car customers are repeat buyers. Some 75 percent of limousine and livery fleets are made up of this large American luxury sedan. Yet individuals still account for more than 65 percent of all LINCOLN Town Car sales. The vehicle is equipped with a 239 horsepower 4.6-liter V8 and a four speed automatic transmission. Optional equipment includes an upgraded Alpine audio system, a wood and leather-wrapped steering wheel, premium leather seats (heated in the front) with a memory feature that positions the gas and brake pedals in addition to the seats and mirrors, rain-sensing wipers, 20-ounce Shiva pile carpeting, special 14-spoke wheels, a power-sliding glass moonroof, and a new extended rear park-assist system that uses both ultrasonic and radar sensors. For 2006, the LINCOLN Town Car's trim levels changed to: Signature, Signature Limited, Designer, and Signature L.