2016 Toyota Tundra Regular Cab is the newer version with some differences, such as the model year, starting price, horsepower, and fuel economy.. First of all, there is a $3,750 difference in the base MSRP. The 2016 Toyota Tundra Regular Cab, a newer vehicle by two model years, has a higher starting price than the 2014 Toyota Tundra Regular Cab. And finally, the 2016 Tundra Regular Cab has a more powerful engine than the 2014 Tundra Regular Cab, and it gets 1 fewer mile on a gallon of fuel. Among similarities are the body structure, ground shadow size, height, and maximum occupancy.