The design theme inside the Cobalt is simple and straightforward. Materials are decent and the fit and finish is good and comparable for the class. There's just enough chrome trim here and there on knobs and instruments to brighten things up without a lot of glare from the shiny parts. Instruments are large, well placed, and easy to read, with nice graphic treatment throughout.

Cobalt uses different seats in the different trim levels, each with detail changes in foam, padding and trim. We found plenty of fore/aft and rake adjustment for a 6-foot, 4-inch driver, plus seat height adjustment with a ratcheting handle. The LT seats were very comfortable and grabbed us in the fast corners exactly where we needed to be grabbed and held. Even better were the leather-trimmed seats in the SS Supercharged.

The available Pioneer seven-speaker sound system with the Delphi AM/FM/CD and XM Satellite Radio delivers good sound and includes a huge subwoofer mounted on the left side trunk wall.

The heating, ventilation and defroster system worked quickly and intuitively.

The LS comes with manually operated windows. We don't mind this, but it takes a lot of cranks (about four and half) to wind the windows up. The urethane steering wheel that comes on LS and LT models feels cheap. The leather-wrapped wheels on LTZ and SS models are much nicer.

The sedan trunk is wide and deep with a low lift-over height, and almost 14 cubic feet of capacity, more than competitive in the class, though the opening to the trunk seems relatively small. Cobalt does not use space-eating gooseneck hinges on its decklid, opting instead for simple outside corner hinges and two hydraulic assist struts. The coupe has a small trunk opening, making it difficult to fit a thick suitcase. A 60/40-split, fold-down rear seat with a trunk pass-through feature adds utility to both sedan and coupe.