From what I've seen so far, all signs point to the GR Corolla using the same turbocharged 3-cylinder engine as the GR Yaris, the G16E-GTS.
In the Yaris the G16E-GTS produces 257 horsepower and 266 pound-feet of torque.
Someone found out that Toyota has cleverly teased the GR Corolla on their Instagram page. At first glance this appears to be a standard photo of the Corolla hatchback. But if you look closer there are some juicy easter eggs. In the dashboard it says G:16 for the time. The G16 is the...