Two Sedans with more similarities, such as the body structure, market segment, starting price, height, and maximum occupancy, than differences, like the modifications, fuel economy, horsepower, and ground shadow size. First of all, the 2015 Subaru WRX STI has a more powerful engine and gets 6 mpg less than the 2016 Nissan Maxima. Also, the 2016 Maxima is slightly larger than the 2015 WRX STI. Among similarities are the body structure, market segment, starting price, height, and maximum occupancy.