Base and LS models come with small but smooth- and quiet-riding 15-inch wheels and Continental tires, the LT comes with 16-inch Pirelli tires and alloy wheels, and the SS comes with 18-inch high-performance Pirelli tires and alloy wheels. The base car comes with disc/drum brakes, and the others come with disc/disc brakes with ABS. The 4T45-E four-speed automatic is an option on lower models ($850), standard on the LT, and not available on the manual-only performance SS version.

For a small car, the Cobalt has an option list that is a very complete one: power sunroof ($725); the OnStar system ($695); XM Satellite Radio ($325), a rear spoiler ($275), a radio upgrade to MP3 ($150). The Sport package ($595) includes a brushed metal trim package for the dashboard, white-faced gauges, leather-wrapped steering wheel and shifter, rear spoiler and 16-inch alloy wheels with Pirelli tires.

Safety features include dual-stage front air bags, front seatbelt pre-tensioners, rear center shoulder belts, and the LATCH child seat retention system. All but base models come with ABS. Other safety features cost extra. Head curtain side air bags ($395) designed to provide head protection are optional. Also optional: OnStar ($695) whose operators can provide assistance after an accident and will direct emergency crews to your exact location should your airbag go off.

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