The 2000 Oldsmobile Alero is available as a 2-door, 5-seat coupe. Starting at $16,790, the 2000 Oldsmobile Alero GX Coupe is powered by a 2.4L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 30-mpg on the highway. The top of the line 2000OldsmobileAleroGLS Sedan , priced at $ 21,545 , is powered by a 3.4L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 32-mpg on the highway.