Two Sedans with some similarities, but otherwise different in most aspects such as the powertrain, modifications, fuel economy, ground shadow size, model year, market segment, and horsepower. First of all, the 2014 C-Class Sedan C63 AMG has a more powerful engine than the 2016 RLX Hybrid, and it gets 15 fewer miles on a gallon of fuel. Also, the body structure of RLX Hybrid is significantly larger than that of the C-Class Sedan C63 AMG. Among similarities are the body structure, market segment, starting price, height, and maximum occupancy.