Toyota GR Yaris Has Its Three-Cylinder Engine Tuned To 741 HP

That's nearly three times more than the standard 1.6-liter engine produces.

By: Adrian Padeanu

May 30, 2023 at 1:39am ET

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With 257 horsepower on tap, the Toyota GR Yaris is a veritable pocket rocket. In Japan, it's slightly more powerful by packing 268 hp from its turbocharged 1.6-liter engine. The same G16E-GTS unit is also found in the GR Corolla where it produces 300 hp. In an attempt to squeeze out a ludicrous amount of power from the little three-pot mill, Powertune Australia has heavily revised the engine to match one of the newest supercars – the McLaren 750S.

The three-pot has been massaged to deliver a massive 741 horsepower (740.9 hp to be exact) at 8,117 rpm. It produces a whopping 462 hp per liter while retaining the original crank, pistons, and rods. Contacted by CarBuzz, the New South Wales-based aftermarket specialist said they've fitted a Garrett G30-770 turbocharger, a beefier head gasket, an Akrapovic exhaust system, a new intercooler, and a custom turbo exhaust manifold. To make everything work in harmony, there's a new Motec ECU.

While the standard GR Yaris routes its power to the all-wheel-drive system via a six-speed manual gearbox, this little beast has an X-Shift sequential transmission with an aftermarket clutch. Side note – Toyota has been testing for a while an eight-speed, torque-converter automatic in a prototype but it hasn't been launched yet.

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This little devil nicknamed "Rodent" has already been subjected to over 30 dyno runs without any issues. Powertune Australia has been dissecting the three-cylinder engine for more than a year, so it's safe to say it knows just about everything there is to know about the G16E-GTS. Having this much power in a tiny AWD car that weighs only 1,280 kilograms (2,822 pounds) in stock form sounds like a lot of fun.

If you're wondering who owns this car, the modded Toyota GR Yaris belongs to Peter Freedman, the founder of Røde Microphones.