The car's highly strung four-pot also makes a peak of 184lb ft, enabling it to accelerate from 0-62mph in a claimed 6.3sec and reach an electronically limited 143mph top speed.
Toyota says its car weighs 1135kg, making it one of the lightest models in the segment. It sits on 17in BBS alloy wheels and Sachs performance shock absorbers.
Despite other cars in the class turning to five-door only bodystyles and the regular Yaris coming in both three and five-door forms, the hot Yaris will be offered as a three-door only.
Just 400 examples of the Yaris GRMN are destined for Europe. Buyers can pre-order now, with prices starting from £26,295.
Toyota's hot hatch takes the GRMN name of Toyota's Gazoo rallying outfit's special edition Toyota road cars. Previous GRMN models, including the GT86, 2013-spec Yaris (Vitz) and the iQ, were sold exclusively in Japan.