Two Pickups with some similarities, but otherwise different in most aspects such as the horsepower, starting price, ground shadow size, height, and maximum occupancy. First of all, there is a $3,630 difference in the base MSRP. The 2017 GMC Sierra 1500 Regular Cab has a higher starting price than the 2017 Toyota Tacoma Access Cab. Also, the 2017 Sierra 1500 Regular Cab pulls more horsepower than the 2017 Tacoma Access Cab. In addition, the Sierra 1500 Regular Cab is both slightly larger and taller than the Tacoma Access Cab. And finally, there is a difference in the number of passengers; the GMC Sierra 1500 Regular Cab seats two more the Toyota Tacoma Access Cab. Among similarities are the body structure and fuel economy.