July 21, 2011 / By Basem Wasef    Automobilemag.com

Technicolor Montana skies proved a fitting backdrop for the international press launch of the third-generation Mercedes-Benz ML, as the Alabama-built sport-ute has seen more than half of its one million units head for U.S. garages.

Though its signature, swept-back c-pillar is retained, der neue ML has a flattened roofline that's a bit less jaunty and a tad more minivan-ish. The ML gains nearly an inch in length and is slightly wider and lower. With more extensive use of high-tensile steel as well as aluminum body panels and suspension components, the result is a 4753-pound curb weight, which is only 22 pounds heavier than its predecessor. This is despite a longer list of standard items that includes an extra airbag (for a total of nine), heated front seats, and a power liftgate. And, for what it's worth, the ML's .32 drag coefficient sets a new record for an SUV.

A new direct-injected 3.5-liter V-6 motivates the ML350 4MATIC, and provides higher outputs (302 hp, 273 lb-ft), and better fuel economy (17/22 mpg) than the outgoing six-cylinder. The ML350 BlueTEC 4MATIC also launches this September, powered by a 3.0-liter diesel that offers more grunt (240 hp, 455 lb-ft) and improved efficiency (20/25 mpg). Both engines use Mercedes' familiar seven-speed 7Gtronic transmission, while a new electromechanical rack-and-pinion steering setup (first seen in the CLS) aids fuel economy numbers. The optional Dynamic Handling Package ($5150) continuously adjusts ride height and damping, along with a hydraulically actuated stabilizer bar that automatically disconnects during straight-line driving. Expect a V-8-powered ML in the first quarter of 2012, and a two wheel-drive ML350 the following September. There's no timeline yet on AMG or hybrid iterations.

Those infamously intractable Germans have made a number of concessions for boorish Americans. The ML's "award-winning cupholders" (wait, weren't those our idea?) are now available with built-in heaters and coolers. Based on research and customer feedback, Mercedes-Benz's multicontroller and cruise control stalks have been relocated, the rear seats now recline, and the expanded cargo area can accommodate golf clubs stowed sideways. iPad docking stations are available as a dealer-installed option for rear passengers, and can be mated to the audio system for in-car movie screenings. Mercedes-Benz tells us third-row seats are also in the works.

After a morning spent traversing Montana highways and crossing the Continental Divide and in an ML350 BlueTEC, the redesigned interior proved pleasant and refined, with a sizable swath of wood and discreet aluminum trim adorning the dash. Curiously, leather upholstery is a $1620 option for the supple yet supportive seats, but our generously equipped test car left almost no box un-ticked -- no surprise, given its $65,015 as-tested price.

Acceleration feels most urgent in the midrange stretch of the power band, where torque peaks between 1600 and 2400 rpm; passing slower traffic requires careful management of shift patterns while avoiding the engine's wheezy upper registers, where oomph tapers off. Some forethought is required when it comes to negotiating mountain passes, as the BlueTEC ML turns in lazily, with a reluctant shift in body mass until it finally settles on its course. Though the dynamic handling package did boost crispness when Sport mode was selected, there was still perceptible body roll despite the built-in anti-roll technology. The ML handles more like its larger GL stablemate than its little sibling, the GLK.

An afternoon driving stint in a standard ML350 revealed noticeably spunkier acceleration with longer legs, aided by a broader torque peak that stretches between 3500 and 5250 rpm. The mostly gravel-strewn roads on our route didn't shed much light on the gasoline-powered ML's handling capabilities, but both variants offered a smooth, quiet ride that made prolonged stints in the cabin remarkably civilized.

At the ML's unveiling earlier this year in Stuttgart, Daimler AG Chairman Dr. Dieter Zetsche boasted that sales of the current generation M-Class grew 15 percent in the first quarter of this year--unusual for a six year-old platform. And with SUV registrations in Germany increasing tenfold since 2000, it seems Americans aren't alone in their appetites for plus-sized vehicles.

The new ML is better equipped, more lavishly detailed, and at $48,990, identically priced to its predecessor. But its conservative styling and stodgy road manners suggest Mercedes-Benz doesn't want to offend its core constituents -- at least until a brawny AMG version becomes available. So while one Mercedes-Benz executive describes the new ML as "Bolder, stronger, and safer," we can't help but think that two out of three isn't bad.

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The body of a thoroughbred with the soul of a speed demon.

How do you make one of the world's greatest high-performance luxury Sport Utility Vehicle? Step one: Start with the latest generation of the most celebrated mid-size luxury SUV on the planet: the all-new 2012 Mercedes-Benz M-Class. Step two: put it in the hands of Mercedes-AMG -- the inventors of the high-performance SUV. Step three: hold on tight.

The all-new ML63 AMG produces 518 horsepower and 516 lb-ft of torque from its new, hand-built 5.5-liter biturbo V-8 AMG engine -- with a boost to 550 horsepower and 590 lb-ft of torque through the available AMG Performance Package.  In both cases, that prodigious power is harnessed by the advanced AMG SPEEDSHIFT 7-speed automatic transmission, which helps make the all-new ML63 AMG capable of accelerating from 0 to 60 mph in a mere 4.7 or 4.6 seconds*, respectively.

While those performance figures are remarkable on their own, even more extraordinary is the efficiency with which they can be delivered. Thanks to innovations including spray-guided direct injection and an "ECO start/stop function" that shuts down the engine when the vehicle is stationary, the all-new ML63 AMG is nearly 30% more fuel efficient than its predecessor -- while increasing output by 15 horsepower and 51 lb-ft of torque in its standard configuration.

Beyond power alone, the all-new ML63 also offers the exceptionally responsive handling, outstanding ride comfort and precise road feel that defines the Mercedes-AMG approach to high performance. The rigid, unibody structure of the M-Class -- a crucial starting point for superior driving dynamics -- receives the formidable combination of the AMG sport suspension with AIRMATIC air suspension and the Adaptive Damping System, paired for the very first time with the new ACTIVE CURVE SYSTEM for active roll stabilization. The result: a suspension that adapts almost instantaneously to driving conditions, both absorbing bumps effortlessly and keeping the ML63 flat through corners. Add standard, 4MATIC all-wheel-drive technology with electronic traction control, electromechanical AMG speed-sensitive sports steering and an AMG high-performance braking system with ventilated and perforated brake discs at all four corners, and you've got all the ingredients of an SUV that handles just like a sports car.

At Mercedes-AMG, handcrafted performance means far more than just extraordinary power and handling. Besides exclusive AMG bodywork, the exterior of the all-new ML63 features 20" five-spoke AMG alloy wheels in a high-gloss titanium grey and two sets of twin, chrome tailpipes to help provide the distinctive sound of an AMG eight-cylinder powerplant. Inside, the craftsmanship becomes even more evident -- from the AMG power sport seats covered in double-top-stitched designo premium leather, to the AMG Performance steering wheel with perforated leather grips and aluminum shift paddles, to the exquisite leather-wrapped dashboard.

The all-new ML63 AMG is not without the lion's share of creature comforts, either. Heated and Active Ventilated Seats, PARKTRONIC with Active Parking Assist and standard Premium 2 Package -- including A 14-speaker harman/kardon LOGIC7® surround-sound system, and the Mercedes-Benz COMAND system with hard-drive navigation, enhanced voice control, Bluetooth® audio streaming -- are among the amenities that come as standard equipment in the luxurious but sport-minded cabin.

The fact is, attempting to create a high-performance luxury SUV that lives up to every part of that moniker is an audacious act in itself. But actually succeeding is a triumph few will ever lay claim to. Suffice to say that for the third straight time, the AMG interpretation of the legendary M-Class is as triumphant as ever.

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