That amount of power with the GTI badge is a joke -the Ye Olde Lupo GTI outdoes this, and tiny displacement engines tuned for performance (like Ford's little 1 litre ecoboost) are not frugal in real life driving. For example, my wife's Audi A1 1.6TDI is barely more economical than my old MK7 GTD on a long run cruising at 80mph, and the GTD engine is pulling along 200kg more weight (or about 15% when you factor in 2 average occupants).
If it has 113PS, call it a GT, not a GTI.