The 1999 Volvo C70 is available as a 2-door, 4-seat coupe. Starting at $39,395, the 1999 Volvo C70 HT (M5) Coupe is powered by a 2.3L , 5 -cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway. The top of the line 1999VolvoC70Convertible , priced at $ 43,395 , is powered by a 2.4L , 5 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway.