Two Pickups with some similarities, but otherwise different in most aspects such as the horsepower, starting price, fuel economy, ground shadow size, height, and maximum occupancy. First of all, the 2015 GMC Canyon Extended Cab is priced $5,150 lower compared to the base MSRP of the 2016 Ram 1500 Regular Cab. Also, the 2016 1500 Regular Cab has a more powerful engine and gets 2.3 mpg less than the 2015 Canyon Extended Cab. In addition, the Canyon Extended Cab is both slightly smaller and shorter than the 1500 Regular Cab. And finally, the Ram 1500 Regular Cab seats two more passengers than the GMC Canyon Extended Cab. Among similarities is the body structure.