Exhibit (j)(1)

Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference into the Prospectuses and Statements of Additional Information in Post-Effective Amendment No. 82 to the Registration Statement on Form N-1A of Fidelity Mt. Vernon Street Trust: Fidelity Growth Strategies Fund of our report dated January 16, 2018; Fidelity Flex Mid Cap Growth Fund of our report dated January 17, 2018; and Fidelity Growth Strategies K6 Fund and Fidelity New Millennium Fund of our reports dated January 18, 2018, relating to the financial statements and financial highlights included in the November 30, 2017 Annual Reports to Shareholders of the above referenced funds which are also incorporated by reference into the Registration Statement.

We also consent to the references to our Firm under the headings “Financial Highlights” in the Prospectuses and “Independent Registered Public Accounting Firm” in the Statements of Additional Information.  

/s/PricewaterhouseCoopers LLP Boston, Massachusetts

January 24, 2018