Two Sedans with more similarities, such as the body structure, market segment, height, and maximum occupancy, than differences, like the horsepower, starting price, fuel economy, and ground shadow size. First of all, the 2015 Cadillac ATS is priced $5,535 lower compared to the base MSRP of the 2016 Hyundai Genesis. Also, the 2016 Genesis has a more powerful engine and gets 3.4 mpg less than the 2015 ATS. And finally, the ATS has a slightly smaller body than the Genesis. Among similarities are the body structure, market segment, height, and maximum occupancy.