Two Coupes, but completely different in all significant aspects: model year, starting price, fuel economy, height, horsepower, ground shadow size, and maximum occupancy. First of all, there is a $17,200 difference in the base MSRP. The 2016 Alfa Romeo 4C Coupe, a newer vehicle by three model years, has a higher starting price than the 2013 BMW 3 Series Coupe. Also, the 2013 3 Series Coupe has a more powerful engine than the 2016 4C Coupe, and it gets 6.8 fewer miles on a gallon of fuel. In addition, not only 4C Coupe is slightly smaller, but it's also significantly shorter than the 3 Series Coupe. And finally, there is a difference in the number of passengers; the BMW 3 Series Coupe seats two more the Alfa Romeo 4C Coupe. Among similarities are the body structure and market segment.