<PAGE> PAGE 1
000 B000000 10/31/97
000 C000000 0000863032
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 MFS SERIES TRUST VI
001 B000000 811-6102
001 C000000 6179545000
002 A000000 500 BOYLSTON STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02116
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 3
007 C010100 1
007 C020100 MFS WORLD TOTAL RETURN FUND
007 C030100 N
007 C010200 2
007 C020200 MFS UTILITIES FUND
007 C030200 N
007 C010300 3
007 C020300 MFS WORLD EQUITY FUND
007 C030300 N
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A00AA01 MASSACHUSETTS FINANCIAL SERVICES COMPANY
008 B00AA01 A
008 C00AA01 801-17352
008 D01AA01 BOSTON
008 D02AA01 MA
008 D03AA01 02116
010 A00AA01 MASSACHUSETTS FINANCIAL SERVICES COMPANY
010 B00AA01 801-17352
010 C01AA01 BOSTON
010 C02AA01 MA
010 C03AA01 02116
011 A00AA01 MFS FUND DISTRIBUTORS, INC.
011 B00AA01 8-27864
<PAGE> PAGE 2
011 C01AA01 BOSTON
011 C02AA01 MA
011 C03AA01 02116
012 A00AA01 MFS SERVICE CENTER, INC.
012 B00AA01 84-1316
012 C01AA01 BOSTON
012 C02AA01 MA
012 C03AA01 02116
015 A00AA01 STATE STREET BANK AND TRUST COMPANY
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02110
015 E01AA01 X
015 A00AA02 CHASE MANHATTAN BANK, N.A.
015 B00AA02 S
015 C01AA02 NEW YORK
015 C02AA02 NY
015 C03AA02 10081
015 E04AA02 X
015 A00AA03 THE BANK OF NEW YORK
015 B00AA03 S
015 C01AA03 NEW YORK
015 C02AA03 NY
015 C03AA03 10286
015 E01AA03 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 52
019 C00AA00 MASSFINSER
020 A000001 MERRILL LYNCH
020 B000001 13-5674085
020 C000001 199
020 A000002 MORGAN STANLEY
020 B000002 13-2655998
020 C000002 167
020 A000003 GOLDMAN SACHS & CO.
020 B000003 13-5108880
020 C000003 100
020 A000004 BANQUE S.G. WARBURG
020 B000004 00-0000000
020 C000004 82
020 A000005 LEHMAN BROTHERS INC.
020 B000005 13-2518466
020 C000005 74
020 A000006 C.J. LAWRENCE/DEUTSCHE BANK SECURITIES CORP
020 B000006 13-2730828
020 C000006 66
020 A000007 UBS SECURITIES INC
020 B000007 13-2932996
020 C000007 65
<PAGE> PAGE 3
020 A000008 J.P. MORGAN SECURITIES INC
020 B000008 13-3224016
020 C000008 62
020 A000009 ING BARINGS SECURITIES INC
020 B000009 13-2680091
020 C000009 57
020 A000010 CHASE MANHATTAN
020 B000010 13-3112953
020 C000010 56
021 000000 2028
022 A000001 GE FINANCIAL
022 B000001 06-1109503
022 C000001 1416714
022 D000001 0
022 A000002 CARROLL MC ENTEE
022 B000002 00-0000000
022 C000002 191218
022 D000002 129061
022 A000003 FORD MOTOR CREDIT
022 B000003 38-1612444
022 C000003 258855
022 D000003 0
022 A000004 PRUDENTIAL SECURITIES INC
022 B000004 22-2347336
022 C000004 192702
022 D000004 12264
022 A000005 CS FIRST BOSTON
022 B000005 13-5659485
022 C000005 188289
022 D000005 11879
022 A000006 GOLDMAN SACHS & CO
022 B000006 13-5108880
022 C000006 156469
022 D000006 30188
022 A000007 ASSOC CORP
022 B000007 00-0000000
022 C000007 186409
022 D000007 0
022 A000008 LEHMAN BROTHERS
022 B000008 13-2518466
022 C000008 107443
022 D000008 25985
022 A000009 CHASE MANHATTAN
022 B000009 13-3112953
022 C000009 107304
022 D000009 439
022 A000010 MERRILL LYNCH
022 B000010 13-5674085
022 C000010 74559
022 D000010 24235
023 C000000 3530912
<PAGE> PAGE 4
023 D000000 476820
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
054 A00AA00 Y
054 B00AA00 N
054 C00AA00 N
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 N
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 N
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 N
077 A000000 Y
077 B000000 Y
078 000000 N
080 A00AA00 NATIONAL UNION/CHUBB
080 B00AA00 FEDERAL INSURANCE
080 C00AA00 80000
081 A00AA00 Y
081 B00AA00 125
082 A00AA00 Y
082 B00AA00 100
083 A00AA00 N
083 B00AA00 0
084 A00AA00 N
084 B00AA00 0
085 A00AA00 Y
085 B00AA00 N
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
<PAGE> PAGE 5
086 E020000 0
086 F010000 0
086 F020000 0
086 A01AA00 0
086 A02AA00 0
086 B01AA00 0
086 B02AA00 0
086 C01AA00 0
086 C02AA00 0
086 D01AA00 0
086 D02AA00 0
086 E01AA00 0
086 E02AA00 0
086 F01AA00 0
086 F02AA00 0
013 A000101 ERNST & YOUNG LLP
013 B010101 BOSTON
013 B020101 MA
013 B030101 02116
024 000100 Y
025 A000101 GENERAL ELECTRIC CO
025 B000101 00-0000000
025 C000101 E
025 D000101 2647
025 A000102 ASSOCIATES CORP. OF NORTH AMERICA
025 B000102 00-0000000
025 C000102 D
025 D000102 10297
025 D000103 0
025 D000104 0
025 D000105 0
025 D000106 0
025 D000107 0
025 D000108 0
028 A010100 5501
028 A020100 0
028 A030100 0
028 A040100 5020
028 B010100 6776
028 B020100 2026
028 B030100 0
028 B040100 4087
028 C010100 5734
028 C020100 0
028 C030100 0
028 C040100 4135
028 D010100 6004
028 D020100 1
028 D030100 0
028 D040100 4247
028 E010100 5850
<PAGE> PAGE 6
028 E020100 0
028 E030100 0
028 E040100 4169
028 F010100 5128
028 F020100 0
028 F030100 0
028 F040100 4557
028 G010100 34993
028 G020100 2027
028 G030100 0
028 G040100 26215
028 H000100 16917
029 000100 Y
030 A000100 421
030 B000100 4.75
030 C000100 0.00
031 A000100 57
031 B000100 0
032 000100 364
033 000100 0
034 000100 Y
035 000100 116
036 A000100 N
036 B000100 0
037 000100 N
038 000100 0
039 000100 N
040 000100 Y
041 000100 Y
042 A000100 0
042 B000100 0
042 C000100 52
042 D000100 48
042 E000100 0
042 F000100 0
042 G000100 0
042 H000100 0
043 000100 1513
044 000100 0
045 000100 Y
046 000100 N
047 000100 N
048 000100 0.000
048 A010100 0
048 A020100 0.000
048 B010100 0
048 B020100 0.000
048 C010100 0
048 C020100 0.000
048 D010100 0
048 D020100 0.000
<PAGE> PAGE 7
048 E010100 0
048 E020100 0.000
048 F010100 0
048 F020100 0.000
048 G010100 0
048 G020100 0.000
048 H010100 0
048 H020100 0.000
048 I010100 0
048 I020100 0.000
048 J010100 0
048 J020100 0.000
048 K010100 0
048 K020100 0.000
049 000100 N
050 000100 Y
051 000100 N
052 000100 N
053 A000100 Y
053 B000100 N
053 C000100 Y
055 A000100 N
055 B000100 N
056 000100 Y
057 000100 N
058 A000100 N
059 000100 Y
060 A000100 N
060 B000100 N
061 000100 1000
062 A000100 N
062 B000100 0.0
062 C000100 0.0
062 D000100 0.0
062 E000100 0.0
062 F000100 0.0
062 G000100 0.0
062 H000100 0.0
062 I000100 0.0
062 J000100 0.0
062 K000100 0.0
062 L000100 0.0
062 M000100 0.0
062 N000100 0.0
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.0
063 A000100 0
063 B000100 0.0
066 A000100 Y
<PAGE> PAGE 8
066 B000100 N
066 C000100 N
066 D000100 N
066 E000100 N
066 F000100 N
066 G000100 Y
067 000100 Y
068 A000100 N
068 B000100 Y
069 000100 N
070 A010100 Y
070 A020100 N
070 B010100 N
070 B020100 N
070 C010100 Y
070 C020100 Y
070 D010100 N
070 D020100 N
070 E010100 Y
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 Y
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 Y
070 K010100 Y
070 K020100 N
070 L010100 Y
070 L020100 Y
070 M010100 Y
070 M020100 Y
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 325245
071 B000100 312522
071 C000100 218659
071 D000100 143
072 A000100 12
<PAGE> PAGE 9
072 B000100 6682
072 C000100 3330
072 D000100 0
072 E000100 -268
072 F000100 2096
072 G000100 26
072 H000100 0
072 I000100 338
072 J000100 192
072 K000100 45
072 L000100 83
072 M000100 42
072 N000100 0
072 O000100 0
072 P000100 0
072 Q000100 0
072 R000100 35
072 S000100 5
072 T000100 1534
072 U000100 0
072 V000100 0
072 W000100 211
072 X000100 4607
072 Y000100 23
072 Z000100 5160
072AA000100 13079
072BB000100 0
072CC010100 16652
072CC020100 0
072DD010100 2231
072DD020100 816
072EE000100 10299
073 A010100 0.2100
073 A020100 0.1300
073 B000100 0.6000
073 C000100 0.0000
074 A000100 338
074 B000100 0
074 C000100 26266
074 D000100 94679
074 E000100 3014
074 F000100 145745
074 G000100 0
074 H000100 603
074 I000100 0
074 J000100 2335
074 K000100 0
074 L000100 3152
074 M000100 3
074 N000100 276135
074 O000100 1672
<PAGE> PAGE 10
074 P000100 89
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 493
074 R040100 458
074 S000100 0
074 T000100 273423
074 U010100 11047
074 U020100 7015
074 V010100 13.84
074 V020100 13.82
074 W000100 0.0000
074 X000100 25326
074 Y000100 14959
075 A000100 0
075 B000100 247680
076 000100 0.00
013 A000201 ERNST & YOUNG LLP
013 B010201 BOSTON
013 B020201 MA
013 B030201 02116
024 000200 N
028 A010200 23115
028 A020200 271
028 A030200 0
028 A040200 19977
028 B010200 8146
028 B020200 304
028 B030200 0
028 B040200 2137
028 C010200 11047
028 C020200 305
028 C030200 0
028 C040200 6317
028 D010200 15756
028 D020200 263
028 D030200 0
028 D040200 8781
028 E010200 20965
028 E020200 258
028 E030200 0
028 E040200 9979
028 F010200 19713
028 F020200 328
028 F030200 0
028 F040200 15296
028 G010200 98742
028 G020200 1729
028 G030200 0
028 G040200 62487
<PAGE> PAGE 11
028 H000200 63267
029 000200 Y
030 A000200 656
030 B000200 4.75
030 C000200 0.00
031 A000200 109
031 B000200 0
032 000200 548
033 000200 0
034 000200 Y
035 000200 147
036 A000200 N
036 B000200 0
037 000200 N
038 000200 0
039 000200 N
040 000200 Y
041 000200 Y
042 A000200 0
042 B000200 0
042 C000200 52
042 D000200 48
042 E000200 0
042 F000200 0
042 G000200 0
042 H000200 0
043 000200 976
044 000200 0
045 000200 Y
046 000200 N
047 000200 N
048 000200 0.000
048 A010200 0
048 A020200 0.000
048 B010200 0
048 B020200 0.000
048 C010200 0
048 C020200 0.000
048 D010200 0
048 D020200 0.000
048 E010200 0
048 E020200 0.000
048 F010200 0
048 F020200 0.000
048 G010200 0
048 G020200 0.000
048 H010200 0
048 H020200 0.000
048 I010200 0
048 I020200 0.000
048 J010200 0
<PAGE> PAGE 12
048 J020200 0.000
048 K010200 0
048 K020200 0.000
049 000200 N
050 000200 Y
051 000200 N
052 000200 N
053 A000200 Y
053 B000200 Y
053 C000200 Y
055 A000200 Y
055 B000200 N
056 000200 Y
057 000200 N
058 A000200 N
059 000200 Y
060 A000200 N
060 B000200 N
061 000200 1000
062 A000200 N
062 B000200 0.0
062 C000200 0.0
062 D000200 0.0
062 E000200 0.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
062 K000200 0.0
062 L000200 0.0
062 M000200 0.0
062 N000200 0.0
062 O000200 0.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 0.0
063 A000200 0
063 B000200 0.0
066 A000200 Y
066 B000200 N
066 C000200 N
066 D000200 N
066 E000200 Y
066 F000200 N
066 G000200 N
067 000200 N
068 A000200 N
068 B000200 N
069 000200 N
070 A010200 Y
<PAGE> PAGE 13
070 A020200 N
070 B010200 N
070 B020200 N
070 C010200 N
070 C020200 N
070 D010200 Y
070 D020200 N
070 E010200 N
070 E020200 N
070 F010200 Y
070 F020200 N
070 G010200 Y
070 G020200 N
070 H010200 Y
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 Y
070 K010200 Y
070 K020200 N
070 L010200 Y
070 L020200 Y
070 M010200 Y
070 M020200 N
070 N010200 Y
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 Y
070 P020200 N
070 Q010200 N
070 Q020200 N
070 R010200 N
070 R020200 N
071 A000200 278415
071 B000200 233896
071 C000200 153379
071 D000200 153
072 A000200 12
072 B000200 2256
072 C000200 4738
072 D000200 0
072 E000200 -155
072 F000200 1016
072 G000200 17
072 H000200 0
072 I000200 214
072 J000200 70
072 K000200 31
072 L000200 61
<PAGE> PAGE 14
072 M000200 42
072 N000200 0
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 38
072 S000200 3
072 T000200 1015
072 U000200 12
072 V000200 0
072 W000200 134
072 X000200 2653
072 Y000200 306
072 Z000200 4492
072AA000200 29198
072BB000200 0
072CC010200 3178
072CC020200 0
072DD010200 2595
072DD020200 1850
072EE000200 10587
073 A010200 0.3400
073 A020200 0.2700
073 B000200 0.7900
073 C000200 0.0000
074 A000200 79
074 B000200 0
074 C000200 5761
074 D000200 29966
074 E000200 3726
074 F000200 164031
074 G000200 0
074 H000200 0
074 I000200 0
074 J000200 5710
074 K000200 0
074 L000200 3120
074 M000200 1
074 N000200 212394
074 O000200 6296
074 P000200 64
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 465
074 S000200 0
074 T000200 205569
074 U010200 8673
074 U020200 8878
074 V010200 10.39
<PAGE> PAGE 15
074 V020200 10.36
074 W000200 0.0000
074 X000200 12441
074 Y000200 0
075 A000200 0
075 B000200 157143
076 000200 0.00
013 A000301 DELOITTE & TOUCHE LLP
013 B010301 BOSTON
013 B020301 MA
013 B030301 02110
013 B040301 1617
024 000300 N
028 A010300 41888
028 A020300 0
028 A030300 0
028 A040300 34034
028 B010300 47252
028 B020300 0
028 B030300 0
028 B040300 39646
028 C010300 48315
028 C020300 0
028 C030300 0
028 C040300 32379
028 D010300 42867
028 D020300 0
028 D030300 0
028 D040300 42595
028 E010300 58404
028 E020300 0
028 E030300 0
028 E040300 46116
028 F010300 67151
028 F020300 0
028 F030300 0
028 F040300 55509
028 G010300 305877
028 G020300 0
028 G030300 0
028 G040300 250279
028 H000300 204486
029 000300 Y
030 A000300 858
030 B000300 5.75
030 C000300 0.00
031 A000300 94
031 B000300 0
032 000300 764
033 000300 0
034 000300 Y
<PAGE> PAGE 16
035 000300 209
036 A000300 N
036 B000300 0
037 000300 N
038 000300 0
039 000300 N
040 000300 Y
041 000300 Y
042 A000300 0
042 B000300 0
042 C000300 64
042 D000300 36
042 E000300 0
042 F000300 0
042 G000300 0
042 H000300 0
043 000300 2642
044 000300 0
045 000300 Y
046 000300 N
047 000300 Y
048 000300 1.000
048 A010300 0
048 A020300 0.000
048 B010300 0
048 B020300 0.000
048 C010300 0
048 C020300 0.000
048 D010300 0
048 D020300 0.000
048 E010300 0
048 E020300 0.000
048 F010300 0
048 F020300 0.000
048 G010300 0
048 G020300 0.000
048 H010300 0
048 H020300 0.000
048 I010300 0
048 I020300 0.000
048 J010300 0
048 J020300 0.000
048 K010300 0
048 K020300 0.000
049 000300 N
050 000300 N
051 000300 N
052 000300 N
053 A000300 Y
053 B000300 N
053 C000300 Y
<PAGE> PAGE 17
055 A000300 Y
055 B000300 N
056 000300 Y
057 000300 N
058 A000300 N
059 000300 Y
060 A000300 Y
060 B000300 Y
061 000300 1000
062 A000300 N
062 B000300 0.0
062 C000300 0.0
062 D000300 0.0
062 E000300 0.0
062 F000300 0.0
062 G000300 0.0
062 H000300 0.0
062 I000300 0.0
062 J000300 0.0
062 K000300 0.0
062 L000300 0.0
062 M000300 0.0
062 N000300 0.0
062 O000300 0.0
062 P000300 0.0
062 Q000300 0.0
062 R000300 0.0
063 A000300 0
063 B000300 0.0
066 A000300 Y
066 B000300 N
066 C000300 Y
066 D000300 N
066 E000300 N
066 F000300 N
066 G000300 N
067 000300 N
068 A000300 N
068 B000300 Y
069 000300 N
070 A010300 Y
070 A020300 N
070 B010300 Y
070 B020300 N
070 C010300 N
070 C020300 N
070 D010300 Y
070 D020300 N
070 E010300 N
070 E020300 N
070 F010300 Y
<PAGE> PAGE 18
070 F020300 N
070 G010300 Y
070 G020300 N
070 H010300 Y
070 H020300 N
070 I010300 N
070 I020300 N
070 J010300 Y
070 J020300 Y
070 K010300 Y
070 K020300 N
070 L010300 Y
070 L020300 Y
070 M010300 Y
070 M020300 Y
070 N010300 Y
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 Y
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 N
070 R020300 N
071 A000300 304893
071 B000300 222412
071 C000300 341358
071 D000300 65
072 A000300 12
072 B000300 1344
072 C000300 6711
072 D000300 0
072 E000300 -574
072 F000300 3684
072 G000300 40
072 H000300 0
072 I000300 512
072 J000300 297
072 K000300 76
072 L000300 76
072 M000300 45
072 N000300 0
072 O000300 0
072 P000300 0
072 Q000300 0
072 R000300 44
072 S000300 5
072 T000300 2672
072 U000300 0
072 V000300 0
<PAGE> PAGE 19
072 W000300 350
072 X000300 7801
072 Y000300 38
072 Z000300 -282
072AA000300 24215
072BB000300 0
072CC010300 37698
072CC020300 0
072DD010300 0
072DD020300 0
072EE000300 29245
073 A010300 0.0000
073 A020300 0.0000
073 B000300 1.9300
073 C000300 0.0000
074 A000300 38
074 B000300 0
074 C000300 23599
074 D000300 2
074 E000300 7842
074 F000300 401902
074 G000300 0
074 H000300 0
074 I000300 0
074 J000300 7560
074 K000300 0
074 L000300 4370
074 M000300 3
074 N000300 445316
074 O000300 6423
074 P000300 118
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 901
074 S000300 0
074 T000300 437874
074 U010300 8333
074 U020300 12686
074 V010300 20.09
074 V020300 19.97
074 W000300 0.0000
074 X000300 52408
074 Y000300 0
075 A000300 0
075 B000300 368384
076 000300 0.00
SIGNATURE JAMES O. YOST
TITLE ASSISTANT TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS UTILITIES FUND
<SERIES>
<NUMBER> 021
<NAME> MFS UTILITIES FUND A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 190147826
<INVESTMENTS-AT-VALUE> 203483582
<RECEIVABLES> 8830419
<ASSETS-OTHER> 79205
<OTHER-ITEMS-ASSETS> 1151
<TOTAL-ASSETS> 212394357
<PAYABLE-FOR-SECURITIES> 6296366
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 528701
<TOTAL-LIABILITIES> 6825067
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 163260703
<SHARES-COMMON-STOCK> 8672797
<SHARES-COMMON-PRIOR> 6619062
<ACCUMULATED-NII-CURRENT> 77488
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 28894870
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13336229
<NET-ASSETS> 205569290
<DIVIDEND-INCOME> 4738413
<INTEREST-INCOME> 2256285
<OTHER-INCOME> (154893)
<EXPENSES-NET> 2347695
<NET-INVESTMENT-INCOME> 4492110
<REALIZED-GAINS-CURRENT> 29198342
<APPREC-INCREASE-CURRENT> 3178460
<NET-CHANGE-FROM-OPS> 36868912
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2595146)
<DISTRIBUTIONS-OF-GAINS> (5350418)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 7819952
<NUMBER-OF-SHARES-REDEEMED> (6378092)
<SHARES-REINVESTED> 732324
<NET-CHANGE-IN-ASSETS> 87116737
<ACCUMULATED-NII-PRIOR> 436026
<ACCUMULATED-GAINS-PRIOR> 10275332
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1015624
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2652633
<AVERAGE-NET-ASSETS> 157143255
<PER-SHARE-NAV-BEGIN> 9.12
<PER-SHARE-NII> 0.32
<PER-SHARE-GAIN-APPREC> 2.08
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.13)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.39
<EXPENSE-RATIO> 1.10
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS UTILITIES FUND
<SERIES>
<NUMBER> 022
<NAME> MFS UTILITIES FUND B
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 190147826
<INVESTMENTS-AT-VALUE> 203483582
<RECEIVABLES> 8830419
<ASSETS-OTHER> 79205
<OTHER-ITEMS-ASSETS> 1151
<TOTAL-ASSETS> 212394357
<PAYABLE-FOR-SECURITIES> 6296366
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 528701
<TOTAL-LIABILITIES> 6825067
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 163260703
<SHARES-COMMON-STOCK> 8877579
<SHARES-COMMON-PRIOR> 5483735
<ACCUMULATED-NII-CURRENT> 77488
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 28894870
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13336229
<NET-ASSETS> 205569290
<DIVIDEND-INCOME> 4738413
<INTEREST-INCOME> 2256285
<OTHER-INCOME> (154893)
<EXPENSES-NET> 2347695
<NET-INVESTMENT-INCOME> 4492110
<REALIZED-GAINS-CURRENT> 29198342
<APPREC-INCREASE-CURRENT> 3178460
<NET-CHANGE-FROM-OPS> 36868912
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1850367)
<DISTRIBUTIONS-OF-GAINS> (4454053)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 4757161
<NUMBER-OF-SHARES-REDEEMED> (1935800)
<SHARES-REINVESTED> 572483
<NET-CHANGE-IN-ASSETS> 87116737
<ACCUMULATED-NII-PRIOR> 436026
<ACCUMULATED-GAINS-PRIOR> 10275332
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1015624
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2652633
<AVERAGE-NET-ASSETS> 157143255
<PER-SHARE-NAV-BEGIN> 9.10
<PER-SHARE-NII> 0.24
<PER-SHARE-GAIN-APPREC> 2.08
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.06)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.36
<EXPENSE-RATIO> 1.87
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS UTILITIES FUND
<SERIES>
<NUMBER> 023
<NAME> MFS UTILITIES FUND C
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 190147826
<INVESTMENTS-AT-VALUE> 203483582
<RECEIVABLES> 8830419
<ASSETS-OTHER> 79205
<OTHER-ITEMS-ASSETS> 1151
<TOTAL-ASSETS> 212394357
<PAYABLE-FOR-SECURITIES> 6296366
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 528701
<TOTAL-LIABILITIES> 6825067
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 163260703
<SHARES-COMMON-STOCK> 2197002
<SHARES-COMMON-PRIOR> 904050
<ACCUMULATED-NII-CURRENT> 77488
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 28894870
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13336229
<NET-ASSETS> 205569290
<DIVIDEND-INCOME> 4738413
<INTEREST-INCOME> 2256285
<OTHER-INCOME> (154893)
<EXPENSES-NET> 2347695
<NET-INVESTMENT-INCOME> 4492110
<REALIZED-GAINS-CURRENT> 29198342
<APPREC-INCREASE-CURRENT> 3178460
<NET-CHANGE-FROM-OPS> 36868912
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (373755)
<DISTRIBUTIONS-OF-GAINS> (782366)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1398533
<NUMBER-OF-SHARES-REDEEMED> (202885)
<SHARES-REINVESTED> 97304
<NET-CHANGE-IN-ASSETS> 87116737
<ACCUMULATED-NII-PRIOR> 436026
<ACCUMULATED-GAINS-PRIOR> 10275332
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1015624
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2652633
<AVERAGE-NET-ASSETS> 157143255
<PER-SHARE-NAV-BEGIN> 9.10
<PER-SHARE-NII> 0.24
<PER-SHARE-GAIN-APPREC> 2.09
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.06)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.37
<EXPENSE-RATIO> 1.85
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS UTILITIES FUND
<SERIES>
<NUMBER> 024
<NAME> MFS UTILITIES FUND I
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 10-MOS
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 190147826
<INVESTMENTS-AT-VALUE> 203483582
<RECEIVABLES> 8830419
<ASSETS-OTHER> 79205
<OTHER-ITEMS-ASSETS> 1151
<TOTAL-ASSETS> 212394357
<PAYABLE-FOR-SECURITIES> 6296366
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 528701
<TOTAL-LIABILITIES> 6825067
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 163260703
<SHARES-COMMON-STOCK> 69786
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 77488
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 28894870
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13336229
<NET-ASSETS> 205569290
<DIVIDEND-INCOME> 4738413
<INTEREST-INCOME> 2256285
<OTHER-INCOME> (154893)
<EXPENSES-NET> 2347695
<NET-INVESTMENT-INCOME> 4492110
<REALIZED-GAINS-CURRENT> 29198342
<APPREC-INCREASE-CURRENT> 3178460
<NET-CHANGE-FROM-OPS> 36868912
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (23347)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 12797
<NUMBER-OF-SHARES-REDEEMED> (65881)
<SHARES-REINVESTED> 2421
<NET-CHANGE-IN-ASSETS> 87116737
<ACCUMULATED-NII-PRIOR> 436026
<ACCUMULATED-GAINS-PRIOR> 10275332
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1015624
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2652633
<AVERAGE-NET-ASSETS> 157143255
<PER-SHARE-NAV-BEGIN> 8.90
<PER-SHARE-NII> 0.29
<PER-SHARE-GAIN-APPREC> 1.48
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (0.28)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.39
<EXPENSE-RATIO> 0.86
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 031
<NAME> MFS WORLD EQUITY FUND CLASS A
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 360666531
<INVESTMENTS-AT-VALUE> 433345224
<RECEIVABLES> 11929605
<ASSETS-OTHER> 3013
<OTHER-ITEMS-ASSETS> 38269
<TOTAL-ASSETS> 445316111
<PAYABLE-FOR-SECURITIES> 6423253
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1018704
<TOTAL-LIABILITIES> 7441957
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 341404966
<SHARES-COMMON-STOCK> 8332541
<SHARES-COMMON-PRIOR> 5145398
<ACCUMULATED-NII-CURRENT> 1034753
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 22742491
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72691944
<NET-ASSETS> 437874154
<DIVIDEND-INCOME> 6710843
<INTEREST-INCOME> 1344378
<OTHER-INCOME> (573831)
<EXPENSES-NET> (7763799)
<NET-INVESTMENT-INCOME> (282409)
<REALIZED-GAINS-CURRENT> 24215038
<APPREC-INCREASE-CURRENT> 37698223
<NET-CHANGE-FROM-OPS> 61630852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (10136119)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 18465899
<NUMBER-OF-SHARES-REDEEMED> (15804320)
<SHARES-REINVESTED> 527190
<NET-CHANGE-IN-ASSETS> 153323464
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 29131434
<OVERDISTRIB-NII-PRIOR> (41430)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3683876
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7801087
<AVERAGE-NET-ASSETS> 368384300
<PER-SHARE-NAV-BEGIN> 18.45
<PER-SHARE-NII> 0.08
<PER-SHARE-GAIN-APPREC> 3.49
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.93)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.09
<EXPENSE-RATIO> 1.63
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 032
<NAME> MFS WORLD EQUITY FUND CLASS B
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 360666531
<INVESTMENTS-AT-VALUE> 433345224
<RECEIVABLES> 11929605
<ASSETS-OTHER> 3013
<OTHER-ITEMS-ASSETS> 38269
<TOTAL-ASSETS> 445316111
<PAYABLE-FOR-SECURITIES> 6423253
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1018704
<TOTAL-LIABILITIES> 7441957
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 341404966
<SHARES-COMMON-STOCK> 12686105
<SHARES-COMMON-PRIOR> 9921316
<ACCUMULATED-NII-CURRENT> 1034753
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 22742491
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72691944
<NET-ASSETS> 437874154
<DIVIDEND-INCOME> 6710843
<INTEREST-INCOME> 1344378
<OTHER-INCOME> (573831)
<EXPENSES-NET> (7763799)
<NET-INVESTMENT-INCOME> (282409)
<REALIZED-GAINS-CURRENT> 24215038
<APPREC-INCREASE-CURRENT> 37698223
<NET-CHANGE-FROM-OPS> 61630852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (18280750)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 9100603
<NUMBER-OF-SHARES-REDEEMED> (7308155)
<SHARES-REINVESTED> 972341
<NET-CHANGE-IN-ASSETS> 153323464
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 29131434
<OVERDISTRIB-NII-PRIOR> (41430)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3683876
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7801087
<AVERAGE-NET-ASSETS> 368384300
<PER-SHARE-NAV-BEGIN> 18.36
<PER-SHARE-NII> (0.07)
<PER-SHARE-GAIN-APPREC> 3.46
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.78)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 19.97
<EXPENSE-RATIO> 2.39
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 033
<NAME> MFS WORLD EQUITY FUND CLASS C
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 360666531
<INVESTMENTS-AT-VALUE> 433345224
<RECEIVABLES> 11929605
<ASSETS-OTHER> 3013
<OTHER-ITEMS-ASSETS> 38269
<TOTAL-ASSETS> 445316111
<PAYABLE-FOR-SECURITIES> 6423253
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1018704
<TOTAL-LIABILITIES> 7441957
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 341404966
<SHARES-COMMON-STOCK> 842074
<SHARES-COMMON-PRIOR> 411292
<ACCUMULATED-NII-CURRENT> 1034753
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 22742491
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72691944
<NET-ASSETS> 437874154
<DIVIDEND-INCOME> 6710843
<INTEREST-INCOME> 1344378
<OTHER-INCOME> (573831)
<EXPENSES-NET> (7763799)
<NET-INVESTMENT-INCOME> (282409)
<REALIZED-GAINS-CURRENT> 24215038
<APPREC-INCREASE-CURRENT> 37698223
<NET-CHANGE-FROM-OPS> 61630852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (828520)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 887059
<NUMBER-OF-SHARES-REDEEMED> (495886)
<SHARES-REINVESTED> 39609
<NET-CHANGE-IN-ASSETS> 153323464
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 29131434
<OVERDISTRIB-NII-PRIOR> (41430)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3683876
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7801087
<AVERAGE-NET-ASSETS> 368384300
<PER-SHARE-NAV-BEGIN> 18.24
<PER-SHARE-NII> (0.06)
<PER-SHARE-GAIN-APPREC> 3.44
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> (1.84)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 19.78
<EXPENSE-RATIO> 2.36
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 034
<NAME> MFS WORLD EQUITY FUND CLASS I
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 360666531
<INVESTMENTS-AT-VALUE> 433345224
<RECEIVABLES> 11929605
<ASSETS-OTHER> 3013
<OTHER-ITEMS-ASSETS> 38269
<TOTAL-ASSETS> 445316111
<PAYABLE-FOR-SECURITIES> 6423253
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1018704
<TOTAL-LIABILITIES> 7441957
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 341404966
<SHARES-COMMON-STOCK> 23431
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 1034753
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 22742491
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 72691944
<NET-ASSETS> 437874154
<DIVIDEND-INCOME> 6710843
<INTEREST-INCOME> 1344378
<OTHER-INCOME> (573831)
<EXPENSES-NET> (7763799)
<NET-INVESTMENT-INCOME> (282409)
<REALIZED-GAINS-CURRENT> 24215038
<APPREC-INCREASE-CURRENT> 37698223
<NET-CHANGE-FROM-OPS> 61630852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 22958
<NUMBER-OF-SHARES-REDEEMED> (1153)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 153323464
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 29131434
<OVERDISTRIB-NII-PRIOR> (41430)
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3683876
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7801087
<AVERAGE-NET-ASSETS> 368384300
<PER-SHARE-NAV-BEGIN> 17.57
<PER-SHARE-NII> 0.13
<PER-SHARE-GAIN-APPREC> 2.44
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 20.14
<EXPENSE-RATIO> 1.38
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 011
<NAME> MFS WORLD TOTAL RETURN FUND CLASS A
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 224987716
<INVESTMENTS-AT-VALUE> 270307642
<RECEIVABLES> 5487226
<ASSETS-OTHER> 2000
<OTHER-ITEMS-ASSETS> 338404
<TOTAL-ASSETS> 276135272
<PAYABLE-FOR-SECURITIES> 1671934
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1040786
<TOTAL-LIABILITIES> 273422552
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 211376539
<SHARES-COMMON-STOCK> 11046653
<SHARES-COMMON-PRIOR> 10197969
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (1310949)
<ACCUMULATED-NET-GAINS> 17450329
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 45906633
<NET-ASSETS> 273422552
<DIVIDEND-INCOME> 3330009
<INTEREST-INCOME> 6681626
<OTHER-INCOME> (267697)
<EXPENSES-NET> (4583503)
<NET-INVESTMENT-INCOME> 5160435
<REALIZED-GAINS-CURRENT> 13079421
<APPREC-INCREASE-CURRENT> 16651658
<NET-CHANGE-FROM-OPS> 34891514
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2231027)
<DISTRIBUTIONS-OF-GAINS> (6137212)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2549188
<NUMBER-OF-SHARES-REDEEMED> (2296772)
<SHARES-REINVESTED> 596268
<NET-CHANGE-IN-ASSETS> 57543508
<ACCUMULATED-NII-PRIOR> 1027892
<ACCUMULATED-GAINS-PRIOR> 10271896
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2096169
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4607446
<AVERAGE-NET-ASSETS> 142584732
<PER-SHARE-NAV-BEGIN> 12.73
<PER-SHARE-NII> 0.31
<PER-SHARE-GAIN-APPREC> 1.61
<PER-SHARE-DIVIDEND> (0.21)
<PER-SHARE-DISTRIBUTIONS> (0.60)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.84
<EXPENSE-RATIO> 1.59
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 012
<NAME> MFS WORLD TOTAL RETURN FUND CLASS B
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 224987716
<INVESTMENTS-AT-VALUE> 270307642
<RECEIVABLES> 5487226
<ASSETS-OTHER> 2000
<OTHER-ITEMS-ASSETS> 338404
<TOTAL-ASSETS> 276135272
<PAYABLE-FOR-SECURITIES> 1671934
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1040786
<TOTAL-LIABILITIES> 273422552
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 211376539
<SHARES-COMMON-STOCK> 7014778
<SHARES-COMMON-PRIOR> 5646347
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (1310949)
<ACCUMULATED-NET-GAINS> 17450329
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 45906633
<NET-ASSETS> 273422552
<DIVIDEND-INCOME> 3330009
<INTEREST-INCOME> 6681626
<OTHER-INCOME> (267697)
<EXPENSES-NET> (4583503)
<NET-INVESTMENT-INCOME> 5160435
<REALIZED-GAINS-CURRENT> 13079421
<APPREC-INCREASE-CURRENT> 16651658
<NET-CHANGE-FROM-OPS> 34891514
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (816452)
<DISTRIBUTIONS-OF-GAINS> (3460672)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2145163
<NUMBER-OF-SHARES-REDEEMED> (1074408)
<SHARES-REINVESTED> 297676
<NET-CHANGE-IN-ASSETS> 57543508
<ACCUMULATED-NII-PRIOR> 1027892
<ACCUMULATED-GAINS-PRIOR> 10271896
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2096169
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4607446
<AVERAGE-NET-ASSETS> 85204873
<PER-SHARE-NAV-BEGIN> 12.71
<PER-SHARE-NII> 0.22
<PER-SHARE-GAIN-APPREC> 1.62
<PER-SHARE-DIVIDEND> (0.13)
<PER-SHARE-DISTRIBUTIONS> (0.60)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.82
<EXPENSE-RATIO> 2.25
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 013
<NAME> MFS WORLD TOTAL RETURN FUND CLASS C
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 224987716
<INVESTMENTS-AT-VALUE> 270307642
<RECEIVABLES> 5487226
<ASSETS-OTHER> 2000
<OTHER-ITEMS-ASSETS> 338404
<TOTAL-ASSETS> 276135272
<PAYABLE-FOR-SECURITIES> 1671934
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1040786
<TOTAL-LIABILITIES> 273422552
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 211376539
<SHARES-COMMON-STOCK> 1572190
<SHARES-COMMON-PRIOR> 1120131
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (1310949)
<ACCUMULATED-NET-GAINS> 17450329
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 45906633
<NET-ASSETS> 273422552
<DIVIDEND-INCOME> 3330009
<INTEREST-INCOME> 6681626
<OTHER-INCOME> (267697)
<EXPENSES-NET> (4583503)
<NET-INVESTMENT-INCOME> 5160435
<REALIZED-GAINS-CURRENT> 13079421
<APPREC-INCREASE-CURRENT> 16651658
<NET-CHANGE-FROM-OPS> 34891514
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (183191)
<DISTRIBUTIONS-OF-GAINS> (701486)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 681359
<NUMBER-OF-SHARES-REDEEMED> (284443)
<SHARES-REINVESTED> 55143
<NET-CHANGE-IN-ASSETS> 57543508
<ACCUMULATED-NII-PRIOR> 1027892
<ACCUMULATED-GAINS-PRIOR> 10271896
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2096169
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4607446
<AVERAGE-NET-ASSETS> 18352914
<PER-SHARE-NAV-BEGIN> 12.72
<PER-SHARE-NII> 0.23
<PER-SHARE-GAIN-APPREC> 1.61
<PER-SHARE-DIVIDEND> (0.14)
<PER-SHARE-DISTRIBUTIONS> (0.60)
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.82
<EXPENSE-RATIO> 2.24
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000863032
<NAME> MFS SERIES TRUST VI
<SERIES>
<NUMBER> 014
<NAME> MFS WORLD TOTAL RETURN FUND CLASS I
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> OCT-31-1997
<PERIOD-START> NOV-01-1996
<PERIOD-END> OCT-31-1997
<INVESTMENTS-AT-COST> 224987716
<INVESTMENTS-AT-VALUE> 270307642
<RECEIVABLES> 5487226
<ASSETS-OTHER> 2000
<OTHER-ITEMS-ASSETS> 338404
<TOTAL-ASSETS> 276135272
<PAYABLE-FOR-SECURITIES> 1671934
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1040786
<TOTAL-LIABILITIES> 273422552
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 211376539
<SHARES-COMMON-STOCK> 133379
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (1310949)
<ACCUMULATED-NET-GAINS> 17450329
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 45906633
<NET-ASSETS> 273422552
<DIVIDEND-INCOME> 3330009
<INTEREST-INCOME> 6681626
<OTHER-INCOME> (267697)
<EXPENSES-NET> (4583503)
<NET-INVESTMENT-INCOME> 5160435
<REALIZED-GAINS-CURRENT> 13079421
<APPREC-INCREASE-CURRENT> 16651658
<NET-CHANGE-FROM-OPS> 34891514
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (21797)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 155509
<NUMBER-OF-SHARES-REDEEMED> (23736)
<SHARES-REINVESTED> 1606
<NET-CHANGE-IN-ASSETS> 57543508
<ACCUMULATED-NII-PRIOR> 1027892
<ACCUMULATED-GAINS-PRIOR> 10271896
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2096169
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4607446
<AVERAGE-NET-ASSETS> 1864735
<PER-SHARE-NAV-BEGIN> 12.51
<PER-SHARE-NII> 0.30
<PER-SHARE-GAIN-APPREC> 1.21
<PER-SHARE-DIVIDEND> (0.16)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.86
<EXPENSE-RATIO> 1.24
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
