Two Sedans with some similarities, but otherwise different in most aspects such as the modifications, fuel economy, market segment, starting price, horsepower, and ground shadow size. First of all, there is a notable difference in the starting price of the 2016 Acura TLX, which is $6,800 less than the base MSRP of the 2015 Subaru WRX STI Limited. Also, the 2015 WRX STI Limited has a more powerful engine than the 2016 TLX, and it gets 7.5 fewer miles on a gallon of fuel. In addition, the body structure of TLX is slightly larger than that of the WRX STI Limited. Among similarities are the body structure, height, and maximum occupancy.