The 2003 Volvo S80 is available as a 4-door, 5-seat sedan. Starting at $36,455, the 2003 Volvo S80 2.9 is powered by a 2.9L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway. The top of the line 2003VolvoS80T6 SR Fleet , priced at $ 43,935 , is powered by a 2.9L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 26-mpg on the highway.