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Mercedes-Benz engines with 48-volt systems coming in 2017

As part of a big green push announced yesterday, Mercedes-Benz is jumping into the world of 48-volt power. The company will launch a new family of efficient gasoline engines next year and will begin rolling out 48-volt systems with it, likely in its more expensive cars first. Mercedes will use the 48-volt systems to power mild-hybrid functions like energy recuperation (commonly called brake regeneration), engine stop-start, electric boost, and even moving a car from a stop on electric power alone. These features will be enabled through either an integrated starter-generator (Mercedes abbreviates it ISG) or a belt-driven generator (RSG). (RSG is from the German word for belt-driven generator, Riemenstartergeneratoren. That's your language lesson for the day.) Mercedes didn't offer many other details on the new family of engines. There are 48-volt systems already in production; Audi's three-compressor SQ7 engine uses an electric supercharger run by a 48-volt system, and there's a new SQ5 diesel on the horizon that will use a similar setup with the medium-voltage system. Electric superchargers require a lot of juice, which can be fed by either a supercapacitor or batteries in a 48-volt system. Why 48-volt Matters: Current hybrid and battery-electric vehicles make use of very high voltages in their batteries, motors, and the wiring that connects them, usually around 200 to 600 volts. The high voltage gives them enough power to move a big vehicle, but it also creates safety issues. The way to mitigate those safety issues is with added equipment, and that increases both cost and weight. You can see where this is going. By switching to a 48-volt system, the high-voltage issues go away and the electrical architecture benefits from four times the voltage of a normal vehicle system and uses the same current, providing four times the power. The electrical architecture will cost more than a 12-volt system but less than the complex and more dangerous systems in current electrified vehicles. The added cost makes sense now because automakers are running out of ways to wisely spend money for efficiency gains. Cars can retain a cheaper 12-volt battery for lower-power accessories and run the high-draw systems on the 48-volt circuit. The industry is moving toward 48-volt power, with the SAE working on a standard for the systems and Delphi claiming a 10-percent increase in fuel economy for cars that make the switch.

Mercedes G63 AMG 6x6 is sold out

Sometimes automakers go absolutely bonkers and bequeath a product on the world that makes no logical sense – except to make people grin from ear to ear. The Mercedes-Benz G63 AMG 6X6 is just such a vehicle with six wheels, three axles, five differentials and a 5.5-liter twin-turbocharged V8 making 536 horsepower and 561 pound-feet of torque. The result is a truck that looks more appropriate to handle the dystopian future rather than any paved road on Earth, especially the $1.35 million armored version. Unfortunately, if you have a hankering to own a brand-new example, it's too late because Mercedes is ending production of the behemoth. Since introducing the 6X6 in 2013, Mercedes actually sold more than it originally anticipated by moving more than 100 of them, according to GT Spirit, but the German automaker has ended production to keep the model special. Still, those production numbers aren't too shabby considering the truck's ultra-niche nature and base price of 379,000 euros ($430,000 at current exchange rates). While wealthy clients who desire luxury with their off-roading can no longer order the 6X6, Mercedes isn't entirely abandoning these customers yet. The company is already previewing the G500 4x42 that takes the six-wheeler's pumped up suspension and wheels but reinterprets the look on the more conventional, two-axle body style. Buyers might have to accept a naturally aspirated 5.5-liter V8, though. A debut for the new model is expected for the upcoming Geneva Motor Show in early March. Related Video:

Mercedes mulling Renault-based entry-level X-Class?

Somewhere in between the Smart brand and the all-new A-Class (pictured above), Daimler is said to be readying a smaller entry-level product for the Mercedes-Benz brand to compete with models like the Audi A1. According to AutoBild, Mercedes-Benz will get a new hatchback based on a platform from its recent partnership with Renault-Nissan, and it could be called the X-Class.
Expected to debut by 2018, the Mercedes-Benz X-Class could be offered in sedan, hatchback and crossover variants, and it would likely have a starting price below the $20,000-euro mark. Power would come from either a 1.0-liter inline three-cylinder engine or a 1.5-liter inline-four, and the car would likely be built in a low-cost nation in order to make the financials work. Wearing the Mercedes-Benz name, the X-Class would have to exhibit more distinguishable luxury and styling to set itself apart from the models that helped provide its underpinnings.