A new patent seems to confirm rumours Fiat Chrysler (FCA) is developing a new turbocharged inline six-cylinder petrol engine.
The patent, which was approved April this year, features an explanatory diagram with a straight-six engine.
Sources have told the website, the inline six-cylinder engine will have a displacement of around 3.0 litres and use "E-Booster" technology to reduce turbo lag.
Power for the engine family is expected to range from around 270kW up to about 390kW for performance variants.
Given the packaging restraints of a straight-six engine, it's likely this motor will be restricted to vehicles based on a rear- and all-wheel drive platform.
Should such an engine make it into production, it could be used to replace V6 and some V8 offerings from these brands.
MORE: Fiat Chrysler coverage