Porsche Announces Sirius Satellite Radio Offering

Factory Installation Option on all 2005 Cayenne Available this Month

NEW YORK, and ATLANTA, July 13 -- SIRIUS Satellite Radio , the premium satellite radio provider known for delivering the very best in commercial-free music and sports programming to cars and homes across the country, and Porsche Cars North America, Inc. (PCNA) today announced that SIRIUS will be available this month as a factory- installed option on all 2005 Porsche Cayenne models sold in the United States.

SIRIUS will be available on all 2005 Cayenne, Cayenne S and Cayenne Turbo U.S. models. Pricing for the fully integrated SIRIUS system is available from PCNA.

"SIRIUS is an ideal addition to the Cayenne model line, and complements the high standards personified by Porsche," said Doug Wilsterman, Senior Vice President, Automotive OEM, SIRIUS. "This decision by one of the world's premier automakers also reinforces SIRIUS' continued supremacy in the luxury car market and the allure of our premium programming."

About SIRIUS

SIRIUS, now available to over 10 million DISH Network satellite TV and SIRIUS Satellite Radio subscribers, provides listeners with over 120 channels of the best commercial-free music, sports, information and entertainment, with digital quality sound coast-to-coast, broadcast daily from New York City, Los Angeles, Nashville, New Orleans, Houston and Daytona. SIRIUS offers 65 channels of 100% commercial-free music, featuring multiple categories of pop, rock, country, hip-hop, R&B, dance, jazz, classical and Latin music, along with more than 50 channels of world-class sports, news, talk, entertainment, traffic and weather for a monthly subscription fee of only $12.95, with greater savings for upfront payments of multiple months or a year or more. SIRIUS also broadcasts live play-by-play games of the NHL and the NFL, and is the official satellite radio partner of the NFL.

SIRIUS Satellite Radio products for the car, truck, home, RV and boat are manufactured by Alpine, Audiovox, Blaupunkt, Clarion, Eclipse, Jensen, JVC, Kenwood, Panasonic and U.S. Electronics, and can be purchased at major retailers including Best Buy, Car Toys, Circuit City, Good Guys, Wal-Mart, Sears, Tweeter and Ultimate Electronics, along with RadioShack and DISH Network outlets.

SIRIUS' exclusive automotive partners DaimlerChrysler, Ford and BMW represent over 40% of new cars and light trucks sold annually in the United States. Automotive brands currently offering SIRIUS radios in select new car models include BMW, MINI, Chrysler, Dodge, Jeep(R), Nissan, Infiniti, Mazda, Audi, Ford, Lincoln-Mercury, Mercedes-Benz, Porsche and Volkswagen. Automotive brands that have announced plans to offer SIRIUS radios in select models include Jaguar, Volvo, Land Rover and Aston Martin. In 2004, SIRIUS radios are expected to be available in over 80 different car models, with more than 50 of them factory programs. Also, Hertz currently offers SIRIUS in 29 vehicle models at 53 major locations around the country. In addition, the Penske companies -- Penske Auto Group, United Auto Group and Penske Trucking - are offering SIRIUS radios as a factory installed option, where available, in their cars and trucks through their dealerships.

Genmar Holdings, the world's largest manufacturer of recreational boats, Formula Boats and Winnebago, the leading supplier of recreational vehicles and motor homes, also offer SIRIUS.

Click on http://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, 2003 filed with the Securities and Exchange Commission. Among the key factors that have a direct bearing on our results of operations are: our dependence upon third parties to manufacture, distribute, market and sell SIRIUS radios and components for those radios; the unproven market for our service; our competitive position and any events which affect the useful life of our satellites.

About Porsche Cars North America, Inc.

Porsche Cars North America, Inc. (PCNA), based in Atlanta, Ga., and its subsidiary, Porsche Cars Canada, Ltd., are the exclusive importers of Porsche sports cars and Cayenne sport utility vehicles for the United States and Canada. A wholly owned, indirect subsidiary of Dr. Ing. h.c.F. Porsche AG, PCNA employs approximately 250 people who provide Porsche vehicles, parts, service, marketing and training for its 204 U.S. and Canadian dealers. They, in turn, provide Porsche owners with best-in-class service.