The Sport is Mazda6's entry level model, with a base price that undercuts the top-of-the-line Grand Touring by almost $9,000. And while it doesn't have premium features like a navigation system, it does include: 17-inch alloy wheels; air conditioning; keyless entry and push button start; stability control; and traction control. There are few options at the Sport level, and no option packages.

Of particular note, if you want a Mazda6 with the six-speed manual transmission, the Sport is the only place to get it.

The Touring takes a significant step up from the Sport. The most obvious difference might be 19-inch wheels, which better fill the Mazda6's wheel wells. Other upgrades include: dual-zone automatic climate control; safety features like a blind spot monitoring system and a rear crossing traffic alert; Bluetooth for hands-free phone and audio streaming; a 5.8-inch touch-screen display; and an HD radio.

The optional Touring Technology package adds many features that are standard equipment on the Grand Touring model.

The Grand Touring sits at the pinnacle of the Mazda6 lineup, with a host of standard equipment that includes: a moonroof; bi-Xenon headlights; paddle shifters on the steering wheel; keyless entry with push button start; leather upholstery; heated and power-adjustable front seats; a Bose sound system; and a SiriusXM satellite radio.

As with the Touring model, there are few options, and only one option group: the self-descriptive Mazda Radar Cruise Control and Forward Obstruction Warning package.