Fiat Chrysler Automobiles could be working on a brand new straight-six engine to eventually replace the Pentastar V6, a new report suggests.

Citing an unnamed source, Allpar claims that the automaker will base a bespoke straight-six around its new GME four-cylinder engine. The resulting powertrain should be smoother and more compact than the Pentastar V6 while also being easier to produce alongside the existing four-pots.

Although details about the straight-six are minimal, its displacement could be pegged at 2.99-liters to avoid taxes applied to engines exceeding 3.0-liters in some European countries.

Logic would dictate that the straight-six would be used through the Fiat Chrysler Automobiles family. It is even suggested that Ferrari will use the same core architecture to develop its own new engine for its cars as well as various Maserati products.

This engine would be built in a number of guises, including for performance-focused models affixed with the SRT badge. Production may be handled by one of FCA’s engine plants in Dundee, Michigan as well as a facility in Trenton, Michigan.

FCA is thought to have been developing this engine for quite some time and it would be the perfect answer to the straight-sixes currently sold by the likes of BMW and Mercedes-Benz and the one developed by Jaguar.