Investor Relations

SIRIUS Satellite Radio Doubles its Net Subscriber Additions in the Third Quarter 2005

- Net Subscriber Additions of Over 359,000 Reflect a 97% Increase From Year-Ago Quarter - More Than One Million Subscribers Added in First Nine Months of the Year - Company Continues to Gain Market Share

NEW YORK, Oct 04, 2005 /PRNewswire-FirstCall via COMTEX/ -- SIRIUS Satellite Radio (Nasdaq: SIRI) today announced it added more than 359,000 new net subscribers during the third quarter of 2005, reflecting continued strong demand for its service. The third quarter net subscriber gain represents a 97% increase in net subscribers over year-ago quarter net additions of approximately 182,000. SIRIUS ended the quarter with over 2.17 million subscribers.

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"We continued to experience strong subscriber growth during the third quarter, which was the best third quarter in our history, and increased our market share from the year-ago quarter by more than 20%. With the traditionally heavy holiday selling period coming up, we fully expect demand for our service to accelerate significantly through the remainder of the year," said Mel Karmazin, CEO of SIRIUS. "With the recent introduction of our new programming line-up, which will include Martha Stewart Living Radio later this year and Howard Stern in January 2006, we are ushering-in an exciting new chapter in satellite radio. Plus, we are launching a new generation of products this fall that will complement our unique mix of content and make it very affordable for consumers to subscribe to SIRIUS."

SIRIUS expects to reach three million subscribers by the end of 2005.

About SIRIUS

SIRIUS delivers more than 120 channels of the best commercial-free music, compelling talk shows, news and information, and the most extensive sports programming to listeners across the country in digital quality sound. SIRIUS offers 65 channels of 100% commercial-free music, and features over 55 channels of sports, news, talk, entertainment, traffic and weather for a monthly subscription fee of only $12.95. SIRIUS also broadcasts live play-by- play games of the NFL, NHL and NBA and is the Official Satellite Radio Partner of the NFL and NHL.

SIRIUS products for the car, truck, home, RV and boat are distributed by Alpine, Audiovox, Brix Group, Clarion, Delphi, Directed Electronics, Eclipse, Jensen, JVC, Kenwood, Magnadyne, Monster Cable, Pioneer, Russound, Tivoli and XACT Communications. Available in more than 25,000 retail locations, SIRIUS radios can be purchased at major retailers including Best Buy, Circuit City, Crutchfield, Costco, Target, Wal-Mart, Sam's Club and RadioShack. SIRIUS is also available at heavy truck dealers, truck stops and travel centers nationwide.

SIRIUS radios are currently offered in vehicles from Audi, BMW, Chrysler, Dodge, Ford, Infiniti, Jaguar, Jeep(R), Land Rover, Lexus, Lincoln-Mercury, Mazda, Mercedes-Benz, MINI, Nissan, Scion, Toyota, Porsche, Volkswagen and Volvo. Hertz currently offers SIRIUS at major locations around the country.

Click on www.sirius.com to listen to SIRIUS live, or to find a SIRIUS retailer or car dealer in your area.

Any statements that express, or involve discussions as to, expectations, beliefs, plans, objectives, assumptions, future events or performance with respect to SIRIUS Satellite Radio Inc. are not historical facts and may be forward-looking and, accordingly, such statements involve estimates, assumptions and uncertainties which could cause actual results to differ materially from those expressed in any forward-looking statements. Accordingly, any such statements are qualified in their entirety by reference to the factors discussed in our Annual Report on Form 10-K for the year ended December 31, 2004 filed with the Securities and Exchange Commission. Among the key factors that have a direct bearing on our operational results are: our dependence upon third parties, including manufacturers of SIRIUS radios, retailers, automakers and programming partners, our competitive position and any events which affect the useful life of our satellites.

G - SIRI

     Contacts for SIRIUS:

     Jim Collins
     Media
     212-901-6422
     jcollins@siriusradio.com

     Michelle McKinnon
     Analysts
     212-584-5285
     mmckinnon@siriusradio.com

     Jaymie VanValkenburgh
     Investors
     212-584-5158
     jvanvalkenburgh@siriusradio.com

SOURCE SIRIUS

Jim Collins, Media, +1-212-901-6422, jcollins@siriusradio.com, or Michelle McKinnon,
Analysts, +1-212-584-5285, mmckinnon@siriusradio.com, or Jaymie VanValkenburgh,
Investors, +1-212-584-5158, jvanvalkenburgh@siriusradio.com, all of SIRIUS
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