EXHIBIT 12 GENERAL MOTORS CORPORATION AND SUBSIDIARIES COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES Years Ended December 31, ------------------------ 1998 1997 1996 ---- ---- ---- (Dollars in Millions) Income from continuing operations $2,956 $6,698 $4,953 Income taxes 1,463 1,069 1,723 Losses (earnings) of nonconsolidated associates 184 78 (128) Cash dividends received from associates 78 41 48 Amortization of capitalized interest 68 56 54 ----- ----- ----- Income from continuing operations before income taxes, undistributed income of associates, and capitalized interest 4,749 7,942 6,650 ----- ----- ----- Fixed charges included in income from continuing operations Interest and related charges on debt 6,644 5,946 5,673 Portion of rentals deemed to be interest 285 305 287 ----- ----- ----- Total fixed charges included in income from continuing operations 6,929 6,251 5,960 ----- ----- ----- Earnings available for fixed charges $11,678 $14,193 $12,610 ======= ======= ======= Fixed charges Fixed charges included in income from continuing operations $6,929 $6,251 $5,960 Interest capitalized in the period 112 126 49 ----- ----- ----- Total fixed charges $7,041 $6,377 $6,009 ====== ====== ====== Ratios of earnings to fixed charges 1.66 2.23 2.10 ==== ==== ==== IV-6