The first generation Acura ZDX was announced on April 8, 2009 at the New York Auto Show as a 2010 model, slated for introduction in late Fall 2009 as an all new prototype concept car, billed as a luxury four-door sports coupe. The Acura ZDX went on sale December 15, 2009. The car is powered by an all-aluminum 3.7L 300 hp, 270 lbs-ft torque VTEC V-6, mated to an all-new 6-speed automatic transmission with Sequential SportShift and Super Handling All-Wheel Drive. The V-6 appears to be mechanically similar to the Acura MDX V-6. The Acura ZDX SH-AWD implementation description appears to be very similar to the Acura MDX SH-AWD implementation.