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EXHIBIT NO. 99.10(b)
INDEPENDENT AUDITORS' CONSENT
We consent to the incorporation by reference in this Post-Effective
Amendment No. 38 to Registration No. 33-7638 of MFS Series Trust I of our
reports dated October 9, 2000 appearing in the annual report to shareholders for
the year ended August 31, 2000 of MFS Global Asset Allocation Fund, MFS Value
Fund (formerly known as Equity Income Fund), MFS Research Growth and Income
Fund, MFS Strategic Growth Fund, MFS Core Growth Fund, MFS Technology Fund, MFS
New Discovery Fund, MFS Research International Fund, MFS Global
Telecommunications Fund and MFS Japan Equity Fund and to the references to us
under the headings "Financial Highlights" in each Prospectus and "Independent
Auditors and Financial Statements" in each Statement of Additional Information,
which are part of such Registration Statement.
ERNST & YOUNG LLP
Ernst & Young LLP
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Boston, Massachusetts
December 26, 2000
