Two Sedans with more similarities, such as the body structure, market segment, ground shadow size, height, and maximum occupancy, than differences, like the powertrain, starting price, horsepower, market segment, and fuel economy. First of all, although the 2015 INFINITI Q50 Hybrid has a more powerful engine than the 2016 Cadillac ATS, it gets 6.3 more mpg. Also, the 2016 ATS is priced $11,185 lower compared to the base MSRP of the 2015 INFINITI Q50 Hybrid. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.