EXHIBIT (23) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the Registration Statements of Cooper Tire & Rubber Company listed below, and in the related Prospectuses, of our reports dated March 4, 2005, with respect to the consolidated financial statements and schedule of Cooper Tire & Rubber Company, Cooper Tire & Rubber Company management's assessment of the effectiveness of internal control over financial reporting, and the effectiveness of internal control over financial reporting of Cooper Tire & Rubber Company, included in this Annual Report (Form 10-K) for the year ended December 31, 2004: Form S-3 No. 33-44159 $200,000,000 aggregate principal amount of the Company's Debt Securities No. 333-89149 Registration of securities not to exceed an initial public offering price of $1,200,000,000 Form S-8 No. 2-58577 Thrift and Profit Sharing Plan No. 33-5483 1986 Incentive Stock Option Plan No. 33-35071 Texarkana Pre-Tax Savings Plan No. 33-47980 1991 Stock Option Plan for Non-Employee Directors No. 33-47981 Pre-Tax Savings Plan at the Findlay Plant No. 333-09619 1996 Stock Option Plan No. 333-83311 Pre-Tax Savings Plan (Clarksdale) No. 333-83309 1998 Employee Stock Option Plan 1998 Incentive Compensation Plan No. 333-83589 1998 Non-Employee Directors Compensation Deferral Plan No. 333-84815 Thrift & Profit Sharing Plan No. 333-84813 Texarkana Pre-Tax Savings Plan No. 333-84811 Pre-Tax Savings Plan at the Findlay Plant No. 333-103007 2001 Incentive Compensation Plan No. 333-113315 Pre-Tax Savings Plan at the Auburn Plant, Pre-Tax Savings Plan (Bowling Green -- Hose), Pre-Tax Savings Plan (Bowling Green -- Sealing), Pre-Tax Savings Plan (Clarksdale), Pre-Tax Savings Plan at the El Dorado Plant, Pre-Tax Savings Plan at the Findlay Plant, Texarkana Pre-Tax Savings Plan /s/ Ernst & Young LLP ------------------------ ERNST & YOUNG LLP Toledo, Ohio March 4, 2005 - 1 -