* 1.8L 4-cylinder engine: This was the standard engine, producing 126 horsepower and 128 lb-ft of torque.
* 2.0L 4-cylinder engine: This was available on the Sentra SE-R and produced 140 horsepower and 139 lb-ft of torque.
So, the exact engine size depends on the specific trim level of the 2010 Sentra you're interested in.