Two Sedans with some similarities, but otherwise different in most aspects such as the model year, horsepower, fuel economy, ground shadow size, and height. First of all, the 2013 MKS has a more powerful engine and gets 8.5 mpg less than the 2016 S80. Also, not only MKS is slightly larger, but it's also taller than the S80. Among similarities are the body structure, market segment, starting price, and maximum occupancy.