The 1999 Oldsmobile Intrigue is available as a 4-door, 5-seat sedan. Starting at $21,640, the 1999 Oldsmobile Intrigue GX is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway. The top of the line 1999OldsmobileIntrigueGLS , priced at $ 25,020 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway.