Two Sedans with some similarities, but otherwise different in most aspects such as the model year, modifications, starting price, horsepower, fuel economy, and maximum occupancy. First of all, the 2013 Porsche Panamera is priced $42,150 lower compared to the base MSRP of the 2016 Jaguar XJ XJR, which is newer by three model years. Also, the 2016 XJ XJR has bigger and thirstier engine; the 2013 Panamera gets 1.3 more mpg. In addition, the XJ XJR seats one more passenger than the Panamera. Among similarities are the body structure, market segment, ground shadow size, and height.