The Pontiac Aztek is a mid-size crossover SUV marketed by General Motors introduced in 2000 for the model years 2001 through 2005. As a four-door crossover with front-wheel drive and optional all-wheel drive, the Aztek featured a four-speed automatic transmission with a V6 engine. Marketed by Pontiac as a "sport recreational vehicle," the Aztek used a shortened platform shared with GM's minivans (e.g., the Pontiac Montana) featuring 94 cubic feet of cargo room with its rear seats removed. The design employed conventional rear outswing doors rather than sliding doors, and a split rear tailgate, the lower section formed with seat indentations and cupholders. Other features included a front center console that doubled as a removable cooler, optional rear stereo controls in the cargo area, optional sliding cargo floor with grocery compartments, and optional camping package with an attachable tent and air mattress.