Midsize luxury sedans occupy a rare all-things-to-all-people spot along the automotive spectrum, and the BMW 5 Series nails the brief better than most. It's large enough to package an adult-friendly back seat and small enough to still be engaging and efficient. The interior is sleek and modern without placing form over function, and the ride is all-day comfortable. There is little a passenger can ask of a car that the 5 Series does not excel at.