2012 Chevy Sonic

2012 Chevy Sonic

2012 Chevy Sonic

2012 Chevy Sonic

2012 Chevy Sonic

2012 Chevy Sonic

2012 Sonic. Just don't call it the Aveo. The five-door hatch and four-door sedan are set to be officially unveiled later today at the 2011 Detroit Auto Show, but the Bow Tie brand has been kind enough to share the skinny on this vehicle that's supposed to tango with the likes of the new Hyundai Elantra and the Ford Fiesta. The Sonic will be available with a standard 1.8-liter four-cylinder engine, though buyers can opt up for a turbocharged 1.4-liter producing 138 horsepower, which GM underscores is 18 ponies more than the Fiesta. Shifting duties are handled by either a five-speed manual transmission or a six-speed automatic gearbox.

In fact, it's clear that The General had its sights locked on the Fiesta from the get go. The Sonic hatchback packs more back seat room than its Blue Oval competitor and, with the rear bench folded flat, delivers more cargo room, as well.

GM also put plenty of effort into the suspension by tasking the geometry gurus responsible for the Corvette's mighty grip. Up front, the Sonic benefits from a MacPherson strut design, while a torsion beam handles suspension duties out back.

There's also plenty design-wise to differentiate the Sonic from its homely predecessor, including a more aggressive front fascia with massive headlight arrays. Judging from the photos, the biggest changes are indoors, where a stylish cockpit replaces the bland, bargain plastics of the Aveo. Stay tuned for live photos from the show floor of the 2011 Detroit Auto Show and hit the jump for the full press release.