1.8 as far as I know... 2013 LT hatch...leaving it stock for the foreseeable future. I just signed away 6 years of my life to payments at the local dealership after the motor in my 04 Ion bit the dust, but I've been a GM, especially Chevy, fan for years...one of my first cars was a 92 Z24, and I still miss it.
For a budget car this Sonic is pretty nice! It was the cheapest new car they had on the lot, but I don't feel like I'm settling for less than I wanted.