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XM SATELLITE RADIO EXCEEDS 692,000 SUBSCRIBERS

XM Adds More Than 209,000 Subscribers in Q2; Remains On Track to Exceed One Million Subscribers in 2003

Washington D.C., July 01, 2003 --XM Satellite Radio (Nasdaq: XMSR), the nation's leading satellite radio service, today announced it has 692,253 subscribers. The company closed the 2nd quarter of 2003 with an addition of 209,178 new subscribers. In April 2003 the company announced it had a total of 483,075 subscribers after adding more than 135,000 subscribers in the 1st quarter.

"e;XM's subscriber base continues to grow rapidly,"e; said Hugh Panero, XM President and CEO. "e;The popularity of the Delphi XM SKYFi Radio and the XM PCR combined with the strong rollout in new General Motors vehicles provide a great foundation for growth as we head into the second half of 2003."e;

About XM Satellite Radio
XM is America's #1 satellite radio service. Nearing 700,000 subscribers, XM is on pace to have more than one million subscribers later this year. Whether in the car, home, office or on the go, XM's loyal listeners enjoy 101 digital channels of choice: 70 music channels, more than 35 of them commercial-free, from hip hop to opera, classical to country, bluegrass to blues; and 31 channels of premiere sports, talk, comedy, kid's and entertainment programming.

XM's strategic partners are leaders in the automotive, retail, consumer electronics and media industries. Currently available on 25 of General Motors' 2003 models, XM will be featured on 44 of GM's most popular Cadillac, Chevrolet, GMC, Pontiac, Buick and Saturn models beginning later this year. Honda is making XM available on the Honda Accord, Honda Pilot and Acura RL, Acura TL and Acura MDX models. Toyota, Isuzu, Infiniti, Nissan, Audi and Volkswagen will offer XM to their customers. Consumers can also purchase XM's leading-edge car, home and portable audio receivers, including the critically-acclaimed Delphi XM SKYFi Radio, at Wal-Mart, Best Buy, Circuit City and other major retailers nationwide. XM's strategic investors include General Motors, American Honda Motor Co. Inc., Clear Channel Communications and DIRECTV. For more information about XM, visit our web site atwww.xmradio.com

Factors that could cause actual results to differ materially from those in the forward-looking statements in this press release include demand for the company's service, the company's dependence on third party vendors, its potential need for additional financing, as well as other risks described in XM Satellite Radio Holdings Inc.'s Form 10-K filed with the Securities and Exchange Commission on 3-31-2003. Copies of the filing are available upon request from XM Radio's Investor Relations Department.

Press Contact
Chance Patterson
Phone: 202-380-4318
chance.patterson@xmradio.com