The 2012 Volvo C70 is available as a 2-door, 4-seat convertible. Starting at $40,450, the 2012 Volvo C70 Base is powered by a 2.5L , 5 -cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 28-mpg on the highway. The top of the line 2012VolvoC70Platinum , priced at $ 44,050 , is powered by a 2.5L , 5 - cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 28-mpg on the highway.