Currencyshares Mexican Peso Trust POS AM Prospectus update (post-effective amendment)

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-1 of our report dated January 14, 2010 relating to the financial statements which appears in CurrencyShares^® Mexican Peso Trust’s Annual Report on Form 10-K for the year ended October 31, 2011. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Baltimore, Maryland

January 13, 2012