Aiming at young sport-minded buyers, Pontiac's new car/SUV crossover went on sale in summer 2000 in base and better-equipped GT form, with front-wheel drive. Aztek was loosely based on Pontiac's Montana minivan, with the same 3.4 liter V6 and mandatory automatic transmission, but with four conventional side doors and hatchback styling with a drop-down tailgate. Front side airbags and antilock brakes were standard. An all-wheel-drive version became available during the 2001 season, able to distribute power to the four wheels based upon available traction. Four-wheel disc brakes replaced the usual disc/drum setup on all-wheel-drive models, which were not intended for offroad use and did not include low-range gearing. Aztek's maximum towing capacity was 3500 pounds, the same as the Montana's. Ground clearance was 6.7 inches. Azteks were larger than the popular Lexus RX 300, another car-based crossover. Wheelbase was 5.5 inches longer and it measured 2 inches longer overall. An Aztek was slightly taller and wider, too, with 1.5 inches more rear leg room and 93.5 cubic feet of storage space when the rear seats were removed. Standard equipment included air conditioning, a tilt steering wheel, and power windows/locks/mirrors. The GT added traction control, 16-inch tires in place of 15s, and a removable console bin that served as combination cooler and CD case. Options included a power sunroof and a slide-out cargo-floor section with storage bins and rollaway wheels. Exclusive GT options included heated leather front seats, two rear captain's chairs to replace the standard three-person bench, a head-up instrument display, and GM's OnStar assistance system. Recreational accessories available through dealers included washable seat covers and a camping package with clip-on tent and fitted air mattress. Charges of bizarre styling soon began to surface, which had a negative impact on Aztek sales. Competitors included the Chrysler PT Cruiser, Ford Escape, Honda CR-V, Mazda Tribute, and Subaru Forester, but none of these models looked anything like the Aztek.