Two Sedans with more similarities, such as the body structure, market segment, fuel economy, ground shadow size, height, and maximum occupancy, than differences, like the horsepower and starting price. First of all, there is a notable difference in the starting price of the 2016 Maserati Quattroporte, which is $15,000 less than the base MSRP of the 2016 Audi S8. And finally, the 2016 Quattroporte produces fewer horsepower than the 2016 S8. Among similarities are the body structure, market segment, fuel economy, ground shadow size, height, and maximum occupancy.