A midcycle update to the GL brings a new nine-speed automatic transmission, small styling changes and a name change to GLS.

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The 2017 Mercede-Benz GLS' 4Matic all-wheel-drive system helped navigate slick roads in Austria.

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The 2017 Mercedes-Benz GLS features wider and more upright front grille.

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The power dome hood is one of the new styling elements on the updated 2017 Mercedes-Benz GLS.

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Benz says the new GLS name for 2017 signifies that the model is the S-class of its crossover SUV lineup.

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The 2017 Mercedes-Benz GLS will arrive in dealers at the end of March.

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The 2017 Mercedes-Benz GLS handled the tight and winding roads in Austria with impressive composure for a vehicle this big and heavy.

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Mercedes boasts that it's the only luxury German automaker to have a crossover SUV big enough to seat seven adults comfortably.

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The new grille gives the 2017 Mercedes-Benz GLS a slightly bolder apperance.

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The United States accounts for 60 percent of GL/GLS sales worldwide.

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A new nine-speed automatic transmission in the 2017 Mercedes-Benz GLS performs quick and seamless gear changes.

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Only small visual changes were made to the rear of the 2017 Mercedes-Benz GLS.

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With Dynamic Select in Slippery mode, the 2017 Mercedes GLS made easy work of steep, snow covered inclines.

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The most popular version of the GLS is the GLS450 accounting for 70 percent of sales in the USA.

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Benz's 4Matic all-wheel-drive system is standard on all GLS models.

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Four different engines are available in the 2017 Mercedes-Benz GLS lineup ranging from a diesel V6, turbocharged V6 and a couple of turbocharged V8 engines.

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The Euro-spec GLS 400 is related closely to the US-spec GLS450, but has 29 less horsepower from the turbocharged V6 engine due to different tuning.

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Benz's 4Matic all-wheel-drive system in the 2017 GLS proved its worth during test drives in Austria.

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Rear lamps on the 2017 Mercedes-Benz GLS are now full LED.

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The chrome exhaust finisher on the 2017 Mercedes-Benz GLS.

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The US-spec version of the turbocharged V6 engine in the GLS450 makes 362 horsepower and 369 pound-feet of torque.

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New headlights on the 2017 Mercedes-Benz GLS.

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Only mild updates were performed to the interior of the 2017 Mercedes-Benz GLS.

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The 3-spoke multifunction steering wheel is one of the changes to the cabin of the 2017 Mercedes-Benz GLS.

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The main gauge cluster to the 2017 Mercedes-Benz GLS.

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The updated center screen in the 2017 Mercedes-Benz GLS.

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Familiar climate controls in the 2017 Mercedes-Benz GLS.

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The new center console with the Dynamic Select knob in the 2017 Mercedes-Benz GLS.

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Attractive diamond stitching is available in the interior of the 2017 Mercedes-Benz GLS.

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The spacious second row of seats in the 2017 Mercedes-Benz GLS.

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The 2017 Mercedes GLS' third row offers adequate room for average size adults.

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The 2017 Mercedes-Benz GLS' power third-row seats fold flat at the push of a button.

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