The Buick Regal slots neatly into the mid-size segment, but to some the appearance is deceiving. It sits at the midway point between a VW Passat and a VW Jetta--or a Ford Focus and a Ford Fusion--but especially in its back seat, it can seem much more snug than other mid-sizers in the class. That makes it a more difficult pitch against roomy sedans like the Nissan Maxima, though it's still quite comfortable for four adults.
In front, the Regal has a power-adjustable driver seat, covered in leather, and with just enough bolstering formed into the seatback to take your mind off the flatness of the bottom cushion. It's comfortable, not constrained, but there's less head and leg room than in other mid-size sedans. You'll notice it more if you opt for the sunroof and if you slide the seat back into the knees of the rear passengers.
Cargo capacity isn't the Regal's strongest suit. With just 14.3 cubic feet of trunk room, it's about 3 or 4 cubic feet smaller than other sedans, and a piece of luggage less than the enormous 20-cubic-foot trunk in the Ford Taurus.