The 2011 Volvo C70 is available as a 2-door, 4-seat convertible. Starting at $39,950, the 2011 Volvo C70 Base is powered by a 2.5L , 5 -cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 28-mpg on the highway. The top of the line 2011VolvoC70Fleet , priced at $ 39,950 , is powered by a 2.5L , 5 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 28-mpg on the highway.