- -------------------------------------------------------------------------------- Exhibit 12 MOBIL CORPORATION COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (In millions, except for ratio amount) - -------------------------------------------------------------------------------- Year Ended December 31, -------------------------------------------------- 1994 1995 1996 1997 1998 ------- ------- ------- ------- ------- Income Before Change in Accounting Principle ........... $ 1,759 $ 2,376 $ 2,964 $ 3,272 $ 1,704 Add: Income taxes ................... 1,919 2,015 3,147 3,093 1,356 Portion of rents representative of interest factor ........... 340 368 376 346 317 Interest and amortization of debt discount expense ..... 461 467 455 428 451 Earnings less (greater) than dividends from equity affiliates ............ (40) (51) 153 (59) 329 ------- ------- ------- ------- ------- Income as Adjusted ............... $ 4,439 $ 5,175 $ 7,095 $ 7,080 $ 4,157 ======= ======= ======= ======= ======= Fixed Charges: Interest and amortization of debt discount expense ..... $ 461 $ 467 $ 455 $ 428 $ 451 Capitalized interest ........... 37 47 78 101 74 Portion of rents representative of interest factor ........... 340 368 376 346 317 ------- ------- ------- ------- ------- Total Fixed Charges .............. $ 838 $ 882 $ 909 $ 875 $ 842 ======= ======= ======= ======= ======= Ratio of Earnings to Fixed Charges 5.3 5.9 7.8 8.1 4.9 ======= ======= ======= ======= ======= For the years ended December 31, 1994, 1995, 1996, 1997, and 1998, Fixed Charges exclude $37 million, $28 million, $24 million, $29 million and $25 million, respectively, of interest expense attributable to debt issued by the Mobil Oil Corporation Employee Stock Ownership Plan Trust and guaranteed by Mobil. - -------------------------------------------------------------------------------- Mobil - 29 -