The 2001 Oldsmobile Alero is available as a 2-door, 5-seat coupe. Starting at $17,210, the 2001 Oldsmobile Alero GX Coupe is powered by a 2.4L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 29-mpg on the highway. The top of the line 2001OldsmobileAleroGL4 Sedan , priced at $ 18,620 , is powered by a 2.4L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 29-mpg on the highway.