<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM XM SATELLITE
RADIO INC.'S UNAUDITED CONDENSED CONSOLIDATED STATEMENT OF LOSS, CONDENSED
CONSOLIDATED BALANCE SHEET, AND CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS,
IN EACH CASE FOR THE THREE MONTHS ENDED SEPTEMBER 30, 2000, AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JUL-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 311,302
<SECURITIES> 93,404
<RECEIVABLES> 0
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 406,130
<PP&E> 42,325
<DEPRECIATION> 1,319
<TOTAL-ASSETS> 1,250,878
<CURRENT-LIABILITIES> 55,710
<BONDS> 262,815
0
0
<COMMON> 0
<OTHER-SE> 924,851
<TOTAL-LIABILITY-AND-EQUITY> 1,250,878
<SALES> 0
<TOTAL-REVENUES> 0
<CGS> 0
<TOTAL-COSTS> 0
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> (20,422)
<INCOME-TAX> (20,422)
<INCOME-CONTINUING> (20,422)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (20,422)
<EPS-BASIC> 0
<EPS-DILUTED> 0
</TABLE>