Pricing will be announced in January.
The three- and four-cylinder engines with TwinPower turbocharging are mated to a base six-speed manual transmission or an optional six-speed automatic transmission.
Buyers will have a choice of 11 exterior colors, including the new Caribbean Aqua.
An "Always Open Timer," a gauge that gives drivers how many hours they have driven with the top down, sets this drop-top apart from the competition.
Standard features include a 6.5-inch display screen. An optional 8.8-inch screen includes a "rain warning app" that lets drivers know of impending storms.
Optional cabin treatments include brown leather seating with diamond stitching that's patterned after a British Chesterfield sofa.
In a nod to Mini's British heritage, the convertible top can be ordered with an embroidered Union Jack.
Edmunds says: If you're putting together a list of convertible choices for next spring, the Mini Cooper Convertible should be high on your shopping list.