Two Sedans with more similarities, such as the body structure, market segment, starting price, height, and maximum occupancy, than differences, like the powertrain, market segment, horsepower, fuel economy, and ground shadow size. First of all, the 2016 Audi S3 has a more powerful engine than the 2016 Mercedes-Benz C-Class Hybrid, and it gets 4 fewer miles on a gallon of fuel. Also, the 2016 S3 is slightly smaller than the 2016 C-Class Hybrid. Among similarities are the body structure, market segment, starting price, height, and maximum occupancy.