A 2.5-liter, inline, five-cylinder, turbocharged powerplant produces 218 horsepower and offers up 236 lb.-ft of torque. This is the top engine choice in the S40 sedan and V50 wagon upon which the 2007 Volvo C70 is based. With the added weight of the retractable hardtop, necessary chassis reinforcements, and all of the hardware required to make the top work right and the car as safe as possible, maximum power is always a welcome attribute.