The 2015 Acura RDX has a cabin that's surprisingly space-efficient and well-laid-out.
Against tough competition like the Lexus RX, BMW X3, and Audi Q5, the 2014 Acura RDX holds up admirably in almost every respect pertaining to comfort, space, and versatility.
The RDX is closely related to the Honda CR-V—so you get the CR-V's low cargo floor, well-designed front and rear seat layout (although better seats themselves), and good versatility. You'll find front-seat space in the RDX that's ample even for those over six feet tall, yet an eight-way power adjustable seat and tilt/telescoping steering column offer adjustability for most heights and body types.
The RDX is right in the zone for its compact crossover class, with 26.1 cubic feet of space behind the rear seats, 61.3 cubic feet with the seats folded flat, and 76.9 cubic feet including under-floor storage. Even for those seated in back, the cabin itself is very quiet.
In front, we've found that the length of the seat bottoms is a bit short for longer-legged drivers, however. In back, it's perhaps too narrow for three adults but still suitable for all but those in the six-foot-plus club.
Keep in mind that the ride quality is smooth and quiet; while the suspension is just firm enough for some sportier moments, it filters out road noise admirably.
Plastic plays a more dominant role on the dash, and the fit and finish aren't quite as tight and tidy as the Audi Q5's, but otherwise materials are impressive, fit and finish is good, and the RDX cabin feels every bit like that of a luxury vehicle. The cabin is well-laid-out, too, with cubbies and nooks for storage, and ergonomically-placed if not always logically laid-out controls.