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 $10,100 difference in the base MSRP. The 2013 Audi S8, an older vehicle by three model years, has a higher starting price than the 2016 Maserati Quattroporte. And finally, a bigger engine usually means less mpg. But the 2013 S8 has a more powerful engine and it gets 1 more mpg than the 2016 Quattroporte. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.