Two Sedans with some similarities, but otherwise different in most aspects such as the model year, starting price, horsepower, and fuel economy. First of all, there is a $5,665 difference in the base MSRP. The 2014 Lexus IS 350, an older vehicle by two model years, has a higher starting price than the 2016 INFINITI Q50. And finally, the 2014 IS 350 has a more powerful engine and gets 1.7 mpg less than the 2016 INFINITI Q50. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.