INDEPENDENT AUDITORS' CONSENT
We consent to the incorporation by reference in this Post Effective Amendment
No. 30 to Registration Statement No. 33-1657 of MFS Series Trust X, of our
report dated September 7, 2000 appearing in the annual reports to shareholders
for MFS Income Fund, MFS High Yield Fund, MFS Concentrated Growth Fund and MFS
European Equity Fund, (each a series of MFS Series Trust X) for the year ended
July 31, 2000, and to the references to us under the headings "Financial
Highlights" in the Prospectus and "Independent Auditors and Financial
Statements" in the Statement of Additional Information, both of which are part
of such Registration Statement.
Deloitte & Touche LLP
Boston, Massachusetts
September 28, 2000
