Two SUVs with some similarities, but otherwise different in most aspects such as the modifications, horsepower, starting price, fuel economy, ground shadow size, and height. First of all, the 2016 Audi Q5 is priced $8,680 lower compared to the base MSRP of the 2016 Mercedes-Benz GLA-Class AMG GLA 45 4MATIC. Also, although the 2016 GLA-Class AMG GLA 45 4MATIC has a more powerful engine than the 2016 Q5, it gets 3.5 more mpg. In addition, the Q5 body is slightly larger than the GLA-Class AMG GLA 45 4MATIC, and in addition to that, it's also taller. Among similarities are the body structure, market segment, and maximum occupancy.