NEW YORK (Standard&Poor's) Aug. 16, 2013--Standard&Poor's Ratings Services said today that Sirius XM Radio Inc.'s announcement that it has agreed to purchase the connected-vehicle unit of Agero Inc. does not affect our 'BB' corporate credit rating on the company. The outlook is stable. Following the acquisition, Sirius plans on adding connected vehicle services, such as real-time navigation services, to its list of services offered to auto manufacturers. We expect the $530 million transaction, expected to close in the fourth quarter of 2013, will not have a meaningful impact on leverage. We also expect that leverage will remain below our 4.5x threshold for the company at this rating over the intermediate term. We assess Sirius' business risk