Two Sedans with more similarities, such as the body structure, ground shadow size, height, and maximum occupancy, than differences, like the powertrain, horsepower, starting price, and fuel economy. First of all, the 2016 Nissan Altima has a more powerful engine than the 2015 Volkswagen Passat Diesel, and it gets 5.5 fewer miles on a gallon of fuel. Also, there is a notable difference in the starting price of the 2016 Altima, which is $4,595 less than the base MSRP of the 2015 Passat Diesel. Among similarities are the body structure, ground shadow size, height, and maximum occupancy.