* 2.5L 5-cylinder engine: This naturally aspirated engine produced 218 horsepower and 236 lb-ft of torque. It was available with either a 6-speed manual or a 6-speed automatic transmission.
* T5 2.5L 5-cylinder engine: This turbocharged engine produced 250 horsepower and 266 lb-ft of torque. It was only available with a 6-speed automatic transmission.
So, the engine size for the 2013 Volvo C70 can be either 2.5L depending on the specific trim level and options.