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Interior Upgrade Package

 

The Interior Upgrade Package is the optional interior package that has aluminum accents on the dash and steering wheel. It also includes the MyColor option for the gauges. I believe the 2007's also have an Interior Comfort Option (or perhaps known by another name) that includes heated leather front seats and other doo-dads. Perhaps others can chime in here?

 

It also has improved driver information, like miles left until out of fuel, avg fuel economy, avg speed, etc...

 

For 2007 there is a package called the Comfort Package (53B) which has Heated seats and dual power seats and Electrochromic Mirror with compass.