The soon-to-be launched 2013 Buick Encore showed its face today with the release of the third photo of GM’s Facebook puzzle.

There’s only one image left for the full reveal but for the most part (three-quarters to be precise…), we now know what to expect from the five-passenger model that will make its public debut at the 2012 North American International Auto Show in Detroit in less than a week’s time.

GM is still keeping us in the dark on the details, but to recap, we know that the Encore is based on a similar model being prepared by the Detroit firm’s Opel subsidiary for Europe (see the spy pictures here), with both models making use a modified version of the Sonic/Spark’s Gamma II platform architecture.

It is believed that the Encore will be offered with GM’s latest 1.4-liter and possibly 1.6-liter turbocharged 4-cylinder gasoline units, and a choice of front- and all-wheel drive layouts.

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