General Motors (GM) cut the option price of factory-installed XM Satellite Radio by nearly 40 percent for most of its 2007 model year cars, the automaker announced Aug. 16.

The price will be cut from $325 to $199. More than 90 percent of GM’s model-year 2006 and 2007 U.S. retail vehicles offer factory- installed XM as either an option or as standard equipment.

“The economies of scale and engineering efficiencies brought by the rapid pace of XM Radio installations across GM’s product lineup allow us to pass along cost savings to our customers,” Mark LaNeve, vice president of GMNA sales, service and marketing, said in a statement.