The 2009 Mazda6 is half a foot longer than the 2008 version, with 4.5 inches added to wheelbase and 2.3 inches to width. Despite these substantial increases it doesn't look like a big car, especially with nothing adjacent for scale.

Of the Accord/Altima/Camry/Malibu competition only the Malibu has a longer wheelbase, which doesn't translate to superior cabin or trunk dimensions, and only the Accord is longer and wider by fractions of an inch.

But with its flowing roofline similar to oxymoronic four-door coupes and real coupes like the Audi TT, wraparound overhangs that appear shorter than they are, and sleeker lines overall, the Mazda6 comes across as a smaller, trimmer car than the relatively box-like Accord.

From dead ahead or in your mirror the diamond teardrop headlamps laid over the front corners add a hint of French to a Mazda RX-8 face, and from any other angle the floating front fenders are signature Mazda: the edgiest front-end in the mid-size market. An upper body crease that would normally go to the front wheel stops just shy of that floating fender, and the rear wheel arches have double creases to mirror the front.

Although both Mazda and Acura use a five-sided grille, Mazda's has a deeper V-shape to it and it's all body-colored. There is no chrome beyond the logo wings, and darker colors show even fewer character lines for the most fluid appearance. Fog lights are set in horizontal openings but the lights themselves are vertically-oriented.

At the rear, taillamps wrap well around the sides, and V6-model exhausts are distinctively shaped stand-offs not actually connected to the pipes themselves. You could stretch the shape and find the RX-8's influence in numerous places on the Mazda6.

Interior

The Mazda 6 cabin uses contemporary materials, with metallic-finish surfaces rather than phony wood trim. The exception is the console trim that slashes across the passenger's dash which, on some models, appears a cross between silver-veined black granite and ash-black burnt wood with wide rings in it. It's a look we've not run across recently. Most finishes are appropriate although you will find hard plastic on the doors below the armrest and some console dash pieces; this parallels some cars in the class, while others like the Accord are better.

The seats are cloth on the SV and Sport, and have the same support and comfort as the upper trim lines, lacking only the extra degrees of power adjustment.

Touring uses cloth cushion and backrest centers with leather outboard; the black-and-white striped center seat sections suggest a snow leopard in motion and along with the surrounding leather this combination in the Touring nicely complements the rest of the Mazda6 interior trim.

We found the most striking interior on a Grand Touring, with very light gray leather upholstery and door panel inserts contrasted against black carpeting, lower seat trim, console, dash, and door tops and bottoms. It's a stylish way to get the sun-belt comfort of light colored upholstery without making a mess of a white carpet every time you get in. The Grand Touring is full leather with perforated center sections.

We found the Mazda6 seats comfortable front and rear, regardless of upholstery or power assist. The up-sizing of the Mazda6 has resulted in cabin dimensions similar to and occasionally better than the big Accord, so even 6-foot-plus bodies could sit in front and then jump in back without moving the front seat, even on cars with the moonroof. Frequently the case with rooflines like this one, heads of rear riders will be where roof meets rear window so make sure the belts are snug if you see a big bump coming.

The rear seat does offer spacious accommodation, a center armrest (no pass-through), and a 60/40 split seatback that's easy to fold, but we did not find any AC vents, reading lights, or center passenger headrest and the coat hooks will not hold a plastic hangar.

Outward visibility was good in all directions. The hood slopes out of sight, common in this aero era. The roof pillars are not so wide that they obstruct vision; the outside mirrors are fairly low and so is the dashboard, all adding up to a good view out. Projector headlights come with Xenon on some models, and dash and cabin lighting is more than adequate with either set of gauges.

Instruments are laid out with fuel and tachometer to the left, speed and coolant temperature to the right, with gear range (on automatics), odometers, and outside temperature indication between the two. When shifting an automatic manually the gear selected is shown in large font above the odometers.

At top center of the dash is a deep red digital display for climate, radio and clock information, easily read by anyone in the car. Below it are center vents, the audio system or navigation if so equipped, and basic three-ring climate controls. On the sides of the dash next to the big greenhouse windows are sizable, omni-directional round vents.

All the systems are simple to use, our biggest complaint being the beep that accompanied every volume adjustment made by the steering wheel toggle but this is probably one of the 24 adjustments (along with door lock programming, turn signal click volume, and blind spot monitor on cars with it) the dealer can alter for you.

The navigation system found itself, tracked, and rerouted quickly, and it responded to the first word we tried. However, the 333-watt Bose Centerpoint sound system with 10 speakers including a 9-inch subwoofer was infinitely more fun to listen to.

Most controls are on typical stalk layouts, while blind spot off, trunk release, stability control defeat and the like are to the left of the steering wheel next to a small storage tray. More storage can be found in the center console, doors, and glovebox.

Grand Touring models come with a blind spot monitor system (optional on Touring), though the Mazda6 has no significant blind spots. At speeds greater than 20 mph the system senses vehicles adjacent; it casts an orange image onto the exterior mirror if it senses your car going where another car is, and makes a noise if you signal while it senses a vehicle in the way. It worked better and caused fewer false alarms than similar systems we've tried on other brands.

Cargo space is one the strong suits of the Mazda6, as the 16.6 cubic feet of volume covers the class and is about double what some hybrids have. One needs to lift cargo only to the top of the bumper and slide it in, the car's sweeping roofline making the vertical opening much larger than the depth aspect. There are no hinges or trunk arms within the opening nor cargo shelf impediments, and the rear seatbacks can be released from the trunk.

We noted no fit and finish issues inside or out, and found the basic structure very stiff, with no creaks or squeaks entering steep driveways or angled traverses of sharp bumps.