A version of the Ford Mondeo powered by a 115hp 1.6 diesel will have CO2 emissions of 114g/km, dropping it easily into the A tax rating in Ireland.
The car will feature start-stop technology and feature the ECOnetic badge designating ultra high-efficiency models.
The engine will also be offered in the Mondeo's companion large cars, S-MAX and Galaxy.
Irish availability hasn't yet been announced.