A lightly camouflaged Smart ForFour Brabus has been spied undergoing testing in Europe.

A lightly camouflaged Smart ForFour Brabus has been spied undergoing testing in Europe.

Expected to debut at the Frankfurt Motor Show, the high-performance model has a familiar design but features sportier bumpers and a dual exhaust system.  The model also has lightweight alloy wheels and a sport-tuned suspension which reduces the ride height.

Power will likely be provided by an upgraded version of the turbocharged 0.9-liter three-cylinder engine.  It produces 90 PS (66 kW) in the standard model but the Brabus variant is expected to have up to 130 PS (96 kW).

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Smart ForFour Brabus spied ahead of a possible Frankfurt debut