Two Sedans with some similarities, but otherwise different in most aspects such as the powertrain, horsepower, fuel economy, ground shadow size, and height. First of all, the 2015 Lincoln MKS has bigger and thirstier engine; the 2016 BMW 3 Series Sedan Diesel gets 13.5 more mpg. Also, the 2016 3 Series Sedan Diesel is both significantly smaller and slightly shorter than the 2015 MKS. Among similarities are the body structure, market segment, starting price, and maximum occupancy.