Two Sedans with more similarities, such as the body structure, market segment, starting price, height, and maximum occupancy, than differences, like the modifications, horsepower, fuel economy, and ground shadow size. First of all, although the 2015 Mercedes-Benz CLA-Class CLA 45 AMG has a more powerful engine than the 2016 Cadillac CTS, it gets 2.4 more mpg. Also, the 2016 CTS has a slightly larger body than the 2015 CLA-Class CLA 45 AMG. Among similarities are the body structure, market segment, starting price, height, and maximum occupancy.