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2013 Mercedes-Benz SLS AMG GT Coupe

Mercedes-Benz upgraded its SLS flagship Coupe and Roadster for the 2013 model year, and the changes are marked with them new "GT" nomenclature. Both SLS models arrive with a retuned naturally aspired 6.2-liter V8 delivering 583 horsepower and 479 pound-feet of torque (the horses are up from 563, but the torque remains the same) mated to a revised seven-speed AMG Speedshift dual-clutch gearbox. Rounding out the mechanical upgrades is a redeveloped AMG two-mode adaptive suspension. Physically, the revised models are differentiated by their new "GT" badging, darkened headlight/taillight buckets, red brake calipers, unique wheel colors and high gloss finish on the front grille, exterior mirrors and hood/fender fins. Inside the cabin are new red seatbelts, Alcantara upholstery and contrasting red stitching.
As it is nearly impossible to experience the aluminum gullwing beast on public roads, Mercedes invited out to Southern California's Willow Springs to wring out the 2013 SLS GT Coupe on a racing circuit.

Mercedes, Nissan and VW slammed by China's CCTV

Several automakers in China, including joint ventures with Nissan, Volkswagen and Mercedes-Benz, are in hot water because their dealers are allegedly overcharging customers for repairs. China Central Television, the country's state broadcaster, leveled the claims during its annual Consumer Day expose. CCTV runs these reports each year on March 15 and often takes aim at foreign companies operating within China. This year the focus fell on automakers, according to the Financial Times, and no domestic car companies were targeted. The network also accused dealers of overselling parts, and it took aim at Jaguar Land Rover specifically for problems surrounding transmission repairs, according to Reuters. The yearly stories are often criticized for focusing on outside businesses. "It panders to a certain type of nationalism as it tends to target foreign companies and rarely touches large state groups or monopolies," Qiao Mu, a journalism professor at Beijing Foreign Studies University, said to the Financial Times. Foreign automakers seem to face tighter scrutiny when doing business in China than their domestic counterparts, in general. The government there investigated several luxury brands, including Audi and BMW, last year for how they supplied spare parts and whether the components were overpriced. Some incurred fines, and Lexus decided to lower its prices. Volkswagen also experienced protests when owners felt the company wasn't handling a recall properly. The CCTV report also comes as many auto dealers in China are feeling a pinch due to high mandated sales targets from automakers. The situation was so dire in early 2015 several brands cut back sales targets and in some cases even paid the sellers to offset poor profits. News Source: Financial Times - sub. req., ReutersImage Credit: Andy Wong / AP Photo Government/Legal Mercedes-Benz Nissan Volkswagen Car Dealers Auto Repair Maintenance jaguar land rover

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.