The luxury SUV market is filled with capable contenders so can the third generation M-class really set a new benchmark in the SUV world? We find out What is it? Longer, wider and lower than its predecessor, this new M-Class is still unmistakably a Mercedes.  But while it may be bigger and more powerful, in the interests of improved fuel economy and lower emissions, Mercedes  have equipped the M-Class with a smaller engine than ever before. Who is it aimed at? As a luxury SUV Mercedes are hoping to woo BMW s X5, Volvo s XC90, Audi’s Q7 drivers. Styling? The distinctive style remains but a little nip and tuck goes a long way so changes while subtle, are effective. The lower roof now slopes down and gives it a subtly sporty appearance, emphasised by chrome strips in the front and rear bumpers while LED daytime running lights enhance the overall appeal. Under the Bonnet? Under the ML’s bonnet is a 2.1-litre turbodiesel that’s sufficient to propel it from 0-100 kph in 9.0 seconds on the way to an electronically-limited top speed of 210 km/h. What’s it like inside? The interior looks considerably more luxurious than before and one worthy of the three pointed star. The sloping dash and instrument cluster are all new and create a sweeping sense of space. Along with a liberal use of wood and interior trim the overall ambience is distinctly better. There is more head, leg and elbow room front and back thanks to the extra dimensions. On the Road?  Conventional wisdom suggests that a 2.1-litre turbo diesel engine wouldn’t be suitable to propel such a huge chunk of metal but on the road the 500Nms of pure pulling power and the seven-speed automatic are incredibly effective at giving an almost sporty feel to the M-Classes progress. Smooth and excellently refined it soaks up the road along with any imperfections. Take it on the motorway and it drives like a luxury saloon and while the suspension is set, more on the side of comfort rather than performance, this is exactly what M-Class buyers are looking for. And Safety?  The M-Class is well equipped with a full gamut of the latest Mercedes-Benz passive and active safety features options. Seven airbags are standard – which luckily we didn’t have to put to the test and a host...