2011 Mercedes-benz E350 4matic on 2040-cars

Auto blog

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.

2015 Mercedes-Benz GLA priced from $31,300*

Mercedes-Benz has kindly let loose the price of the 2015 GLA-Class, telling Autoblog.com that the base 208-horsepower GLA250 in two-wheel drive will go for $31,300 *not including a destination charge of $925. That makes for $32,225 in total to get one off the lot, a price predicted as early as last year and in our recent First Drive. The other two available models can push power to all four wheels, and after the destination fee is applied the GLA240 4Matic (pictured) will be $34,225 while the 355-horsepower GLA45 AMG will change lives and wallets to the tune of $49,225.
On the base scale, that puts the GLA250 just a few hundred dollar bills above the more powerful, rear-wheel drive BMW X1 and a stack of hundreds below the less powerful, front-wheel drive Audi Q3. If you're keeping in-house score, the GLA250 comes in at $1,400 above its sedan platform-mate with the same engine, the CLA250. At the high end, however, the competition doesn't have anything that can touch the AMG trim. Not that it should matter all that much - Mercedes needed something to keep these buyers in the family, and now they have it. If any of them should need even more power and more money spent, then there's always that 394-hp Brabus flavor. We'll have more info and details on each trim when Mercedes unleashes the shebang in the not-too-distant future.

Mercedes rolls out the long red carpet for new Maybach S600 Pullman [w/video]

Remember when the S-Class was the S-Class and that was it? The pinnacle of the Mercedes-Benz lineup, at least as far as sedans were concerned. But those days are long behind us. Now there's a coupe as well (bringing the former CL back into the fold), a convertible on its way, the uber-luxe Maybach limo and this: the new Pullman. The creme de la creme of the Silver Star range, His Excellency Field Marshall Dr. Mercedes-Maybach S600 Pullman Dada – as it's known in full, at least with the twelve-cylinder engine – is... well, it's enormous. It's bigger than the old Maybach 62 it essentially replaces and bigger even than an extended-wheelbase Rolls-Royce Phantom. And why would you need a vehicle so large? Well, you wouldn't. And neither would we. But there are some, shall we call them "unelected heads of state" who would accept no less. They're the customers who favored the original, and 50 years later, they're the ones who'll be snapping up the new one. (The little wavy flags on the front fenders are optional.)