Atlanta - 2014 may only be a few weeks old, but automakers are already starting to tempt car shoppers with their offerings for the 2015 model year. All-new versions of several iconic nameplates, a more fuel-efficient version of a popular sedan and a surprising brand new vehicle are among the cars shoppers should keep an eye out for, according to AutoTrader.com.

"Even though 2015 models won't be available in showrooms until later this year, it's important for car shoppers to be aware of all of their choices as early in the research process as possible," AutoTrader.com Site Editor Brian Moody said. "Knowing that a vehicle will be all-new soon can help with negotiating if you're interested in the outgoing model, or if you're the type of shopper who wants the latest and greatest, you can plan your purchase accordingly."

While there are many all-new models planned for the 2015 model year, these are the six that AutoTrader.com is looking forward to most, and Moody's take on why:

Ford Mustang

"The Mustang is well, the Mustang – it's an American icon and any time Ford makes changes to it, it's going to be a big deal. This all-new version has a more sophisticated exterior design, a seriously upgraded interior and independent rear suspension across the lineup, giving something for the enthusiasts and the average driver to be excited about."

Cadillac Escalade

"The Escalade has long been the vehicle of choice for shoppers who can't get enough of big, showy luxury. Even though the Escalade is still based on the same architecture as GM's full-size trucks, we're expecting the all-new version will have a more refined ride than the outgoing model. Those who prioritize style and comfort should be pleased with the design changes that elevate the signature bold look beautifully."

Mazda6 Skyactiv-D

"Even though the Mazda6 isn't all-new for 2015, the diesel engine is, and we think that combined with the vehicle's good looks and sporty handling make it a serious contender for shoppers who are looking for a fun-to-drive and fuel-efficient model in this segment."

Kia K900

"This car would have been incomprehensible just a few short years ago: Kia, a historically budget-oriented carmaker, building an executive-class luxury sedan with rear-wheel drive, an uptown interior and an available 420 horsepower V8. It may sound farfetched, but based on what we saw when the car was revealed at the L.A. Auto Show, it's the real deal."

VW Golf GTI

"This car checks all the boxes – affordable, fun-to-drive, thoughtfully designed and fuel-efficient. The high-performance GTI gets a new engine that delivers 210 horsepower and 258 pound-feet of torque; we've driven a pre-production version and it's a genuinely fast car now, not just a quick one."

Ford F-150

"Details on the new Ford-F-150 are anticipated to be announced at the 2014 North American International Auto Show in Detroit this week, but based on what we know so far, it sounds like one of the best-selling vehicles in America is getting a significant upgrade."