One of the expected facelifts, the Cooper Convertible, achieved the fastest growth of any MINI model in 2017.

MINI is reportedly preparing mid-cycle updates for several models, with three debuts scheduled for Detroit.

The forthcoming debuts will include a revised Cooper Convertible along with updates to the company's three- and five-door Hardtop models, according to Automotive News.

The trio is said to have received modest styling tweaks and improved technology.

The three-door Cooper Hardtop achieved relatively flat sales in 2017, with overall deliveries second only to the Countryman. Interestingly, the convertible achieved an even stronger growth rate than the Countryman, despite a broad falloff in demand for drop-top vehicles.