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, there is a $2,660 difference in the base MSRP. The 2015 Ram 1500 Regular Cab has a higher starting price than the 2016 Nissan Frontier Crew Cab. Also, a bigger engine usually means less mpg. But the 2015 1500 Regular Cab has a more powerful engine and it gets 1.2 more mpg than the 2016 Frontier Crew Cab. In addition, not only Frontier Crew Cab is slightly smaller, but it's also shorter than the 1500 Regular Cab. And finally, there is a difference in the number of passengers; the Ram 1500 Regular Cab seats one more the Nissan Frontier Crew Cab. Among similarities is the body structure.