A report out of Japan claims that Subaru is readying something very special with the next-generation WRX STI and will look to make it more capable than ever before. It is understood that the flagship WRX STI will feature a 2.4-liter turbocharged boxer engine with no less than 400 HP. That is a significant jump up from the 310 HP and 393 Nm of torque of the current car. Interestingly, it is claimed that Subaru isn’t just moving to an enlarged 2.4-liter engine for more power but also because the 2.4-liter is said to be more efficient and has better driveability.

These claims come from Japanese publication Car Sensor and mimic a report from Forbes back in February. In all likelihood, this potent version of the 2.4-liter engine, which is actually derived from the engine used by the Ascent, will be mated exclusively to a six-speed manual transmission that will probably be an updated version of the gearbox used by the current STI.

Meanwhile, the lesser Subaru WRX is also expected to use a version of the same 2.4-liter turbocharged four-cylinder. It will be detuned but should offer up more than the 268 HP and 349 Nm of the current WRX. It will be available with a six-speed manual and an upgraded CVT. Horsepower and torque figures aren’t mentioned although Car Sensor does claim the car’s CVT can’t handle more than 400 Nm. Both the new WRX and WRX STI will sit on the Subaru Global Platform and feature the brand’s symmetrical all-wheel-drive system. The report asserts the new models will launch in early 2022.