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2015 Mercedes-Benz ML400 Quick Spin

Mercedes-Benz has taken a risk in its quest to downsize its engine range. For 2015, the brand's popular M-Class five-passenger CUV did away with its trusty 4.4-liter, twin-turbocharged V8, and has replaced it with a 3.0-liter, twin-turbocharged V6. It's no surprise that power is down thanks to this move. Outputs of 402 horsepower and 443 pound-feet of torque are replaced by 329 hp and 354 lb-ft, but weight is down significantly as well. The new ML400 is nearly 300 pounds lighter than the 4,982-pound ML550. Will that tradeoff be enough to satisfy a buying public that's embraced falling fuel prices by buying bigger and thirstier vehicles? To find out if the blown V6 is a suitable replacement for the twin-turbo V8, we spent a week at the helm of the all-new ML400. Driving Notes This 3.0-liter, twin-turbocharged V6 is the same engine being offered in the C400 and E400 sedans. Typical of today's turbocharged engines, peak torque is spread lavishly across the rev range, from 1,600 to 4,000 rpm. That's not as generous a spread as the ML550, which offers all its torque between 1,600 and 4,750, but the power on offer is easy to access. Importantly, the new V6 never feels flat-footed or unable to answer our commands. In fact, the ML400 feels even quicker than its six-second sprint to 60 would indicate, although it's not so fast as to challenge the 5.3-second time of the ML550. After a slight and expected bout of turbo lag, the power arrives suddenly and proceeds linearly until just south of the engine's 6,500-rpm redline. The throttle response is soft in Eco mode, as expected, but sharpens up slightly when the fuel-sipping mode is off, where the gas pedal is still easy to modulate. It's a quiet engine, too. Compared to the brawnier exhaust note of the old ML550 or the howling six-cylinder in the BMW X5 xDrive35i, the ML400's note is smooth and refined, befitting of a V6. Its turbocharged nature is instantly noticed, though. Get on the throttle and the 3.0-liter happily hisses its way up the tachometer. But, it's only when you get on the throttle hard that the engine really weighs in. In day-to-day driving and traffic its soundtrack is unobtrusive and relaxed. The EPA rates the ML400's fuel economy at 18-miles-per-gallon city and a 22-mpg on the highway. That's better than the 14 city and 19 highway of the old V8 ML, but it still seems a bit low, especially for the highway figure.

2015 Mercedes-AMG C63 S First Drive [w/video]

As I mashed the throttle heading into the back straight of a nearly three-mile-long race track, I couldn't help but center my mind on two ostensibly disparate subjects: physics and pistons. If the heart of an automobile is its engine, the heart of the engine are its rotating bits – the crankshaft, pistons and the block they're nested inside. It seems fitting, then, that the internals of the twin-turbocharged 4.0-liter V8 typify the brand-new 2015 Mercedes-AMG C63 sedan I found myself piloting in Portugal. Whereas the last C-Class AMG availed itself of a brute of an engine, employing 6.2 liters of displacement to make its 451 horsepower the old fashioned way, the latest AMG's V8 engine has been downsized radically. I had the opportunity earlier in the day to actually hold the pistons of the new 4.0 Biturbo V8 in my hands, alongside those of the outgoing 6.2. The difference in size is staggering, the new lumps looking downright picayune in comparison to the latter. These eight seemingly diminutive pistons turn combustion into crankshaft-spinning power inside a block that is smaller, lighter and more compact than I'd have thought possible, considering the prodigious output the engine spits out. I had gone into this assignment expecting to pen an ode to lost love; a sonnet of sorrow bemoaning the switch from massive cylinders to wheezing power adders. But I was wrong. In fact, the report that follows may indeed read a little like a love song, except it will heap praise not on what used to be, but instead on what is now possible. The new heart of AMG more than makes up for its reduction in size by relying on turbochargers and smart engineering to turn just 4.0 liters into 469 horsepower and 479 pound-feet of torque starting at just 1,750 rpm, or as much as 503 ponies and 516 lb-ft in uprated S guise. Foot to the floor, eyes focused on the turn ahead, a hard right-hander named Primeira that requires hard braking and quick reflexes, I had a fleeting moment of clarity: These are some hard-working pistons. A few days on the street and track in and around Faro, Portugal, has convinced me that the new Mercedes-AMG C63 is a better car in any meaningful measurement than it was before. And I'll go one step further. Not only is this the best C-Class AMG ever, it's also my new favorite in the hotly contested segment that includes such knee-benders as the BMW M3 and M4.

2016 Mercedes-Maybach S600 Review [w/video]

"Hindsight is 20/20" is a handy yet disingenuous cliche. The flaw is that hindsight is only instructive up to the moment you would have made a different, perhaps better, decision. At the moment of that deviation the past goes in another direction, one that you can't peer back into because you didn't experience it. So when we say we wish Karl Benz's eponymous firm had produced the Mercedes-Maybach S600 in 2002 instead of the gilded blunder of the separate Maybach brand and its 57 and 62 sedans, we just can't know if the formula would have worked 13 years ago. But we do know the formula adds up superbly right now. A little history: Wilhelm Maybach helped Gottlieb Daimler build a high-speed, four-stroke internal combustion engine in 1885. Eventually Maybach went to work for Daimler's new car company and designed the first Mercedes, the 1901 35-hp model considered the world's first modern car. Maybach left the company after Daimler's death, started a company building zeppelins, then joined his son to start the Maybach car company. Together they developed super luxury cars including the DS8 Zeppelin models that competed with Rolls-Royce. A reviewer in 1933 wrote, "The Maybach Zeppelin models rank among the few cars in the international top class. They are highly luxurious, extremely lavish in their engineering and attainable only for a chosen few." It's a whopping 28 inches shorter than the departed Maybach 62, but 8.2 inches longer than a standard S-Class. As is this Maybach S600. It's a whopping 28 inches shorter than the departed Maybach 62, but since it's 8.2 inches longer than a standard S-Class, there's a very different driving experience. Two-thirds of a foot isn't much, but the Maybach is 639 pounds heavier than an S550, or 231 pounds heavier than a standard S600. From the driver's seat we could feel every additional pound and inch over those other models. It is as if Mercedes threw out the aluminum and steel and chiseled this sedan from basalt. We've driven scanty few cars where we've been genuinely glad for blind-spot detection and 360-degree cameras – this is one of them. The Maybach's wheelbase is four inches longer than that of a Bentley Mulsanne, even though the overall car is almost five inches shorter than the Big B. That long wheelbase translates into tranquil steering response – the S550, S600, and Maybach S600 all have the same 2.3 turns-to-lock, but this sedan feels like it takes more effort. It even looks heavy.