Two Pickups with some similarities, but otherwise different in most aspects such as the horsepower, fuel economy, ground shadow size, height, and maximum occupancy. First of all, the 2018 Ram 1500 Regular Cab has a more powerful engine and gets 1 mpg less than the 2018 Toyota Tacoma Double Cab. Also, the 2018 1500 Regular Cab is both slightly larger and taller than the 2018 Tacoma Double Cab. And finally, the 1500 Regular Cab seats one more passenger than the Tacoma Double Cab. Among similarities are the body structure and starting price.