BlueTEC is a technology developed by Mercedes-Benz to reduce emissions from diesel vehicles, in particular nitrogen oxides. AdBlue®, an aqueous urea solution, is injected into the exhaust flow. This releases ammonia, which converts up to 80 percent of nitrogen oxides into harmless nitrogen and water in the downstream SCR (Selective Catalytic Reduction) catalytic converter. As a result, the S 350 BlueTEC ranks among the world's cleanest diesel models. It already complies with the emission levels which are planned for 2014 with the European introduction of the EU6 standard. The AdBlue® tank is installed under the luggage compartment floor and has a capacity of 25.7 litres. The tank is replenished at the regular maintenance intervals.

The G 350 BlueTEC is the first Mercedes-Benz 4WD to introduce the state-of-the-art BlueTEC technology. The G 350 BlueTEC offers a winning combination of exemplary emission levels and low fuel consumption with superior performance. The particularly clean diesel variant meets the requirements of the EURO 5 emissions standard with ease.