Two Sedans with some similarities, but otherwise different in most aspects such as the model year, powertrain, market segment, starting price, horsepower, and fuel economy. First of all, the 2016 Volkswagen Passat is priced $6,575 lower compared to the base MSRP of the 2013 Buick Regal Hybrid, which is older by three model years. Also, the 2016 Passat has a more powerful engine than the 2013 Regal Hybrid, and it gets 3 fewer miles on a gallon of fuel. Among similarities are the body structure, ground shadow size, height, and maximum occupancy.