An undisguised prototype of the 2016 Smart ForTwo Cabrio has been spotted undergoing final testing in Stuttgart.

An undisguised prototype of the 2016 Smart ForTwo Cabrio has been spotted undergoing final testing in Stuttgart.

As expected, it looks virtually the same as its fixed roof sibling with the exception of the electrically-operated folding canvas top carried over from its predecessor, just like the manually removable side bars.

Daimler-owned Smart has already announced the ForTwo Cabrio will be out later this year with the same naturally aspirated 1.0-liter engine developing 60 HP (45 kW) and 71 HP (52 kW) along with a beefier 0.9-liter turbo rated at 90 HP (66 kW). A five-speed manual transmission will be standard, but at an additional cost you will be able to order an optional dual-clutch six-speed gearbox.

A Brabus-prepared version of the ForTwo is in the works and chances are it will also be available as a Cabrio with an uprated version of the 0.9-liter turbo likely pushing out around 120 HP (88 kW).

Smart will bring the US-spec 2016 ForTwo to this week's New York Auto Show and they could decide to unveil the Cabrio as well. If that won't happen, a September debut at the Frankfurt Motor Show is very probable.

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2016 Smart ForTwo Cabrio spied undisguised