Interior

Five occupants get to enjoy soft all-leather seats. Offerings include heated and ventilated seating and a heated steering wheel. The STS features genuine eucalyptus wood and aluminum trim.

Eight-way power front seats include four-way power lumbar adjustment, and a memory feature is optional. Trunk space totals 13.8 cubic feet.

Options include Bose 5.1 Studio Surround Sound and a DVD/CD changer that can play DVD audio discs as well as MP3 CDs. A DVD-based navigation system is available. General Motors' OnStar communication system includes automatic crash notification.

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    Ride Quality
    The ATS' ride quality is confident and comfortable. A difference of 1 inch in wheel diameter isn't always noticeable, but I found the 2.5L with its 17-inch wheels to ride a little softer than the ...

    Options
    Press the Options screen button. A Traffic Options menu displays. Select the desired traffic related option. Traffic: Press to enable or disable the traffic function. Show Traffic ICONS: Press t ...

    Control Buttons
    The knobs and buttons used to control the CD/DVD player are: CD/AUX (CD/Auxiliary): Press to switch between CD/DVD, auxiliary input, and USB devices. or : Press to select tracks. TUNE/TON ...