<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES VI
<SERIES>
<NUMBER> 021
<NAME> MFS UTILITIES FUND - CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> OCT-31-2000
<PERIOD-START> NOV-01-1999
<PERIOD-END> APR-30-2000
<INVESTMENTS-AT-COST> 1823908521
<INVESTMENTS-AT-VALUE> 1971667937
<RECEIVABLES> 22757067
<ASSETS-OTHER> 5799
<OTHER-ITEMS-ASSETS> 254999857
<TOTAL-ASSETS> 2249430660
<PAYABLE-FOR-SECURITIES> 39204949
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 257779581
<TOTAL-LIABILITIES> 296984530
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1625031318
<SHARES-COMMON-STOCK> 50077526
<SHARES-COMMON-PRIOR> 36555125
<ACCUMULATED-NII-CURRENT> 735848
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 178930732
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 147748232
<NET-ASSETS> 1952446130
<DIVIDEND-INCOME> 15519606
<INTEREST-INCOME> 7335219
<OTHER-INCOME> (161455)
<EXPENSES-NET> (12529177)
<NET-INVESTMENT-INCOME> 10164193
<REALIZED-GAINS-CURRENT> 183232998
<APPREC-INCREASE-CURRENT> 45160143
<NET-CHANGE-FROM-OPS> 238557334
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (4413860)
<DISTRIBUTIONS-OF-GAINS> (40693133)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 16149164
<NUMBER-OF-SHARES-REDEEMED> (5682277)
<SHARES-REINVESTED> 3055514
<NET-CHANGE-IN-ASSETS> 600849489
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 118979115
<OVERDISTRIB-NII-PRIOR> (394325)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4481112
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 12859122
<AVERAGE-NET-ASSETS> 1699879290
<PER-SHARE-NAV-BEGIN> 12.23
<PER-SHARE-NII> 0.11
<PER-SHARE-GAIN-APPREC> 2.00
<PER-SHARE-DIVIDEND> (0.11)
<PER-SHARE-DISTRIBUTIONS> (1.09)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.14
<EXPENSE-RATIO> 0.98
</TABLE>