The Toyota G16E engine is a straight-three engine built by Toyota under its Gazoo Racing division that was first introduced in January 2020 for the GR Yaris as a member of the Toyota Dynamic Force engine family.
The G16E-GTS is a turbocharged engine model with 10.5:1 compression ratio and D-4ST direct/port injection system with multi-oil jet piston cooling, large-diameter exhaust valves and a part-machined intake port. The turbo boost is set between . With the engine producing up to (which comes out to per litre), it makes the engine one of the most powerful three-cylinder automobile engines ever produced. The engine also has the highest specific output of any Toyota road car engine, exceeding the per litre specific output from the 2.0-litre 3S-GTE engine used in the ST246 Caldina GT-Four.
In 2021, Toyota modified the G16E-GTS engine to run exclusively on hydrogen fuel. The modified engine ran in the 2021âÂÂ2022 Super Taikyu series. Toyota has tried to establish hydrogen as a zero-emission fuel alternative to petrol in motorsport and for daily use. In 2023, Toyota showcased its Corolla Cross H2 concept vehicle which used the hydrogen-fueled G16E-GTS engine.
A de-stroked variation of the G16E-GTS engine with a displacement of , which is compatible with synthetic fuel, is used by the GR86 for the 2022 Super Taikyu series. The stroke was reduced from .