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SIRIUS added as standard equipment on S-Class and CLS

Mercedes- Benz, USA and SIRIUS Satellite Radio (Nasdaq: SIRI) today
announced that Mercedes-Benz USA (MBUSA) plans to significantly increase
the rate at which they install SIRIUS radios in Mercedes-Benz vehicles to
more than 80 percent for 2007, with plans to continue building to 90
percent for 2008 and over 90 percent by 2009. The growth in the
installation rate far exceeds earlier estimates of 50 percent that were set
less than two years ago.

(Logo: http://www.newscom.com/cgi-bin/prnh/19991118/NYTH125 )
The luxury automaker also plans to offer SIRIUS as standard equipment
on two additional models this year the S-Class and CLS. The new models will
become available with SIRIUS at dealerships later this year. SIRIUS is
currently standard in Mercedes-Benz's SL-Class and CL-Class model vehicles,
and all AMG and 600 model vehicles.

"Mercedes-Benz customers enjoy SIRIUS' unique radio programming,
including commercial-free music, news, information and the best sports
programming," said Bernard Glaser, general manager of product management
for MBUSA. "It is the perfect complement to the Mercedes-Benz driving
experience."

"We are happy to see SIRIUS go standard across so many Mercedes-Benz
vehicle models. Mercedes-Benz continues to be a great partner in driving
the growth of SIRIUS," said Mel Karmazin, Chief Executive Officer of
SIRIUS. "With these increased installation rates, now more Mercedes-Benz
drivers will get to experience for themselves The Best Radio on Radio."
Mercedes-Benz continues to offer SIRIUS in its vehicles complete with
six months of SIRIUS service.

About SIRIUS
SIRIUS, "The Best Radio on Radio," delivers more than 130 channels of
the best programming in all of radio. SIRIUS is the original and only home
of 100% commercial free music channels in satellite radio, offering 69
music channels. SIRIUS also delivers 65 channels of sports, news, talk,
entertainment, traffic, weather and data. SIRIUS is the Official Satellite
Radio Partner of the NFL, NASCAR, NBA and NHL, and broadcasts live play-by-
play games of the NFL, NBA and NHL, as well as live NASCAR races. All
SIRIUS programming is available for a monthly subscription fee of only
$12.95.

SIRIUS Internet Radio (SIR) is a CD-quality, Internet-only version of
the SIRIUS radio service, without the use of a radio, for the monthly
subscription fee of $12.95. SIR delivers more than 75 channels of talk,
entertainment, sports, and 100% commercial free music.
SIRIUS products for the car, truck, home, RV and boat are available in
more than 25,000 retail locations, including Best Buy, Circuit City,
Crutchfield, Costco, Target, Wal-Mart, Sam's Club, RadioShack and at

shop.sirius.com.
SIRIUS radios are offered in vehicles from Audi, Bentley, BMW,
Chrysler, Dodge, Ford, Infiniti, Jaguar, Jeep(R), Land Rover, Lexus,
Lincoln, Mercury, Maybach, Mazda, Mercedes-Benz, MINI, Mitsubishi, Nissan,
Rolls Royce, Scion, Toyota, Volkswagen, and Volvo. Hertz also offers SIRIUS
in its rental cars at major locations around the country.
Click on http://www.sirius.com to listen to SIRIUS live, or to purchase a

SIRIUS radio and subscription.

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, 2006 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
providers, our competitive position and any events which affect the useful
life of our satellites.

About Mercedes-Benz USA
Mercedes-Benz USA, headquartered in Montvale, New Jersey, is
responsible for the sales, marketing and service of all Mercedes-Benz and
Maybach products in the United States. In 2006, MBUSA achieved an all-time
sales record of 248,080 new vehicles, setting the highest sales volume ever
in its history and achieving 13 consecutive years of sales growth. More
information on MBUSA and its products can be found on the Internet at
http://www.mbusa.com/ and http://www.maybachusa.com/ .