The 370Z Roadster has the same 3.7-litre naturally aspirated engine from the coupe. Maximum power is rated at 332hp (244kW) and 270 lb-ft (366Nm) of torque. Transmission options are a 6-speed manual or a 7-speed automatic. Both are said to return fuel economy figures of 18 mpg in the city and 25 mpg on the highway.