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EXHIBIT 99-4

Consent of PricewaterhouseCoopers LLP

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the inclusion in this Annual Report on Form 40-F for the year ended December 31, 2019 of Suncor Energy Inc. of our report dated February 28, 2019, relating to the Consolidated Financial Statements which appear in this Annual Report.

We also consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-87604), Form S-8 (No. 333-112234), Form S-8 (No. 333-118648), Form S-8 (No. 333-124415), Form S-8 (No. 333-149532), Form S-8 (No. 333-161021), Form S-8 (No. 33-161029) and Form F-10 (No. 333-225338) of Suncor Energy Inc. of our report dated February 28, 2019 referred to above.

We also consent to reference to us under the heading "Interests of Experts," which appears in this Annual Report on Form 40-F which is incorporated by reference in such Registration Statements.

"PricewaterhouseCoopers LLP"

Chartered Professional Accountants
Calgary, Alberta, Canada
February 27, 2020

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EXHIBIT 99-4

Consent of PricewaterhouseCoopers LLP