A shadowy preview of the 2017 Mercedes-Benz GLA has been handed down, ahead of next week's Detroit motor show.

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As with the recently updated A- and CLA-Class models, styling changes to the GLA will be a case of spot-the-difference.

A lightly restyled bumper and fog-light area can be seen here, along with a new slotted look to the familiar twin-louvre garnish through the centre of the grille opening.

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Above: the current Mercedes-AMG GLA 45

Although not confirmed, changes elsewhere will likely include a new LED lighting signature at the rear, while the cabin could bring a larger main display with upgraded COMAND infotainment and Apple Carplay/Android Auto connectivity.

An updated engine range is also likely to feature, along with enhanced driver assistance systems.

Watch for the updated GLA to debut in Detroit next week, and catch our links below for earlier coverage.