Engines and transmissions in detail: The SUV efficiency champion

The third-generation M-Class sets a new benchmark in the SUV segment. The low fuel consumption figures and exemplary emissions figures are particularly impressive. Compared with the outgoing model, the entire model range consumes 25 percent less fuel on average. This kind of formidable reduction in fuel consumption is unprecedented with any Mercedes-Benz SUV model changeover to date. An ultra-modern engine line-up, concerted engine downsizing, the best-in-class Cd value of 0.32, extensive BlueEFFICIENCY measures and new development tools such as the "energy-transparent vehicle" all play their part in delivering the good energy efficiency figures. The highlight comes in the guise of the ML 250 BlueTEC 4MATIC, which is 28 percent more economical than its predecessor, boasts NEDC fuel consumption of 6.0 l/100 km (158 g CO2/km) and has a range of up to 1500 kilometres on a single tank - figures that only a few years ago remained the preserve of the compact class.

BlueTEC diesel units and the new generation of BlueDIRECT direct-injection petrol engines form the basis for the excellent economy and outstanding life cycle assessment of the new M-Class. In this respect, downsizing takes centre stage as far as the diesel models are concerned:

In the ML 250 BlueTEC 4MATIC, the 3.0-litre V6 of the previous model is replaced by the thrifty four-cylinder EU6-standard unit already familiar from, for instance, the S-Class.
The ML 350 BlueTEC 4MATIC features an extensively revamped 3.0-litre V6, which also betters the EU6 standard and offers far better performance coupled with a substantial reduction in fuel consumption. Thanks to state-of-the-art AdBlue® emission control technology both diesel models comfortably meet the EU6 standard slated for introduction in 2014.

    See also:

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    Driving, Part Two
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