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Mercedes-Maybach previews longer, more lavish S-Class ahead of debut

In some international markets, Mercedes-Benz's new 2021 S-Class will get Level 3 semi-autonomous technology, but chauffeur-driven buyers already enjoy full autonomy. It's for these individuals that Mercedes-Maybach, the firm's extra-luxury division, stretched the sedan's wheelbase and gave it an interior worthy of a private jet. Maybach said it developed its variant of the 2021 S-Class specifically for buyers with a chauffeur. It added seven inches to the sedan's wheelbase, and the additional sheet metal benefits those riding in the back. Standard executive rear seats give passengers a comfortable place to work or rest while they're being driven, and the list of new features added to the sedan include massaging calf rests as well as heating for the neck and shoulders. Although we haven't seen Maybach's S-Class yet, a preview image shows the optional two-tone paint — one of the company's hallmarks — and a chromed Maybach emblem. Up front, it will receive a specific grille with vertical slats instead of the horizontal ones worn by the standard S-Class. An additional serving of chrome-look trim will almost certainly further set the Maybach apart, but it will retain its predecessor's relatively subtle design. Specifications won't be announced until the model's unveiling. Mercedes-Benz confirmed it's phasing out V12s, though the big engine could return for one final round under the hood of the S-Class. Alternatively, Maybach may have chosen to surf the downsizing wave still sweeping across the industry by selecting a 4.0-liter V8. Mercedes-Maybach will introduce the 2021 S-Class online on November 19 at 2 p.m. Stuttgart time, which is 8 a.m. in New York City and 5 a.m. in Los Angeles. Deliveries are scheduled to start during the first half of 2021. When it lands, the sedan will join Maybach's variant of the GLS in showrooms across the United States. Related Video:

Mercedes giving SL a nose job

Mercedes tends to keep its SL roadster around longer than most models. The previous fifth-generation machine was launched in 2001, underwent a facelift in 2009 and stuck around until 2012. That's when the current model was introduced, and before it's replaced, Benz is expected to roll out another facelifted version. And that seems to be exactly what we're looking at here. Expected to arrive sometime in 2016 as a 2017 model, the updated SL will likely feature revised styling front and rear (along with updated interior equipment). This prototype appears to be wearing headlights from the new S-Class Coupe, which don't fit precisely, but then Daimler still has a couple of years to get everything just right.

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.