In most respects, the Mazda6 is just as large as a Toyota Camry inside, with a backseat that now has plenty of space for adults and a trunk that's actually the largest in its class at 16.6 cubic feet. The rear seatbacks can also be folded forward to dramatically increase cargo space; however, there are no releases within easy reach of the trunk—you'll need to climb around. Front seats also are better than those elsewhere in this class, with some measure of thigh and side support to hold you in place in corners.
The interior appointments in the Mazda6 look much like those used elsewhere in the Mazda line, such as in the CX-9 and Mazda3, which is to say that they're very fashionable and stylish, with an upscale but not completely luxurious look. Top Grand Touring models are trimmed to look a more lavish, though. The standard cloth upholstery feels sturdy yet comfortable, while the available leather will help satisfy luxury cravings to a degree. The cabin is quiet, and much better hushed from road noise than the Mazda3—and much of its mid-size competition. One remaining complaint is that the electroluminescent gauges features in the more luxurious trims are actually a bit harder to rear in bright sunlight, where they can get bleached out.