Investor Relations

SIRIUS Satellite Radio To Introduce Traffic Data Services

-- SIRIUS to Broadcast Traffic Data for Major Metro Areas Over its Nationwide System in Conjunction with NAVTEQ -- 22 Major Metro Areas to be Covered Beginning November 2005 -- 50 Metro Areas Expected by 2007

NEW YORK, Aug 25, 2005 /PRNewswire-FirstCall via COMTEX/ -- SIRIUS Satellite Radio (Nasdaq: SIRI) today announced that, beginning in November 2005, it will broadcast traffic data from 22 major U.S. metropolitan areas over its nationwide system.

(Logo: http://www.newscom.com/cgi-bin/prnh/19991118/NYTH125 )

SIRIUS will utilize its nationwide satellite radio broadcast capabilities to provide subscribers with updated traffic information from traffic data provider NAVTEQ (NYSE: NVT). NAVTEQ, the premier provider of mapping and traffic data reporting services, collects and quality tests traffic information from a multitude of sources, including police and emergency services and road sensors, creating a database of traffic-related incident and speed information to help drivers select the best available route.

The 22 metro areas that will initially be covered are Atlanta, Baltimore, Boston, Chicago, Dallas/Ft. Worth, Detroit, Houston, Los Angeles, Miami/Ft. Lauderdale, Minneapolis/St. Paul, New York City, Orlando, Philadelphia, Phoenix, Pittsburgh, San Francisco/Oakland, San Diego, San Jose, Seattle, St. Louis, Tampa and Washington D.C. SIRIUS expects to expand the service to over 50 cities by 2007.

The first unit to provide the new traffic data service will be the SiriusConnect SIR-ALP10T tuner, which interfaces with Alpine Electronics' new NVE-N872A Satellite Traffic Ready navigation system. This service will keep subscribers informed about potential delays or incidents along the route, including road speed and flow information, unscheduled traffic incidents, and scheduled road closures and road work.

The SiriusConnect SIR-ALP10T tuner, the first SIRIUS tuner to incorporate both audio entertainment and traffic data services, will be able to simultaneously receive and play SIRIUS' programming while monitoring the data channel for traffic messages. Through its broadcast data service, SIRIUS will deliver NAVTEQ's information to the SIR-ALP10T tuner, which interfaces with the Alpine NVE-N872A Satellite Traffic Ready navigation system. The unique structure of SIRIUS' data service will allow other data services, such as weather, to be seamlessly added in the future.

The suggested retail price for the SiriusConnect SIR-ALP10T tuner is $299.99, and $1,700 for the Alpine NVE-N872A Satellite Traffic Ready navigation system (navigation monitor sold separately). Alpine Satellite Radio-Ready headunits range from $250 to $1,600, including two models with built-in navigation monitors. The SIRIUS traffic data service bundled with SIRIUS' regular audio programming will cost $16.99 per month or $9.99 per month for traffic data only. The Alpine NVE-N872A is scheduled to be available in late September this year, and the SIR-ALP 10T is scheduled to be available in November.

About SIRIUS

SIRIUS delivers more than 120 channels of the best commercial-free music, compelling talk shows, news and information, and the most exciting 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 and NBA, and is the Official Satellite Radio partner of the NFL.

SIRIUS radios for the car, truck, home, RV and boat are manufactured by Alpine, Audiovox, Blaupunkt, Clarion, Delphi, Jensen, JVC, Kenwood, Pioneer, Sanyo 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, Office Depot, Sears, Target, Wal-Mart and RadioShack. SIRIUS is also available at heavy truck dealers and truck stops 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.

About Alpine Electronics

Alpine Electronics is the world's leading automotive consumer electronics system supplier and an ISO certified global corporation. Alpine specializes in engineering solutions for mobile multimedia system integration that includes digital audio and video playback, digital broadcast reception, satellite-linked navigation and device connectivity. With research and development facilities in Asia, Europe and the U.S., Alpine is the global specialist for premium sound systems and in-vehicle navigation for both after-market and OEM factory installations. Alpine Electronics is a consolidated subsidiary of Alps Electric Co., Ltd., one of the world's premier manufacturers of electronic components for computer, communications and car electronics equipment. Visit www.alpine-usa.com to learn more about Alpine products or to find an authorized retailer.

About NAVTEQ

NAVTEQ is a leading provider of comprehensive digital map information for automotive navigation systems, mobile navigation devices, Internet-based mapping applications, and government and business solutions. NAVTEQ creates the digital maps and map content that power navigation and location-based services solutions around the world. The Chicago-based company was founded in 1985 and has approximately 1,600 employees located in 122 offices in 21 countries.

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.

R-SIRI

     Contacts:

     Jim Collins
     Media
     212-901-6422
     c. 732-927-3924
     jcollins@siriusradio.com

     Rebecca Schnall
     Media
     212-901-6478
     c. 917-414-3398
     rschnall@siriusradio.com

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

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

     Jennifer Cody - For Alpine
     Wong Doody Communications
     310-285-0181
     jennifer.cody@wongdoody.com

     Anne Martino - For NAVTEQ
     312-894-7038
     anne.martino@navteq.com

SOURCE SIRIUS Satellite Radio

Jim Collins, Media, +1-212-901-6422, c. +1-732-927-3924, jcollins@siriusradio.com, or
Rebecca Schnall, Media, +1-212-901-6478, or c. +1-917-414-3398,
rschnall@siriusradio.com, or Michelle McKinnon of Analysts, +1-212-584-5285,
mmckinnon@siriusradio.com, or Jaymie VanValkenburgh, Investors, +1-212-584-5158,
jvanvalkenburgh@siriusradio.com, all for SIRIUS Satellite Radio; or Jennifer Cody -
For Alpine, Wong Doody Communications, +1-310-285-0181, jennifer.cody@wongdoody.com;
or Anne Martino - For NAVTEQ, +1-312-894-7038, anne.martino@navteq.com
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