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2015 Mercedes-Benz S63 AMG Coupe

Conventional wisdom would dictate that adding more power and several key performance enhancements to an already very good car, like the 2015 Mercedes-Benz S550 Coupe, will end up equaling an even better car. In the case of the 2015 Mercedes-Benz S63 AMG Coupe, conventional wisdom sort of applies, but perhaps not as much as we'd have initially guessed. We'll get into the nitty gritty details in just a moment, but here's the most immediate takeaway we had in our minds as we walked away from this super coupe: The S63 AMG is excellent, but so is the slightly more mundane S550 Coupe on which it is based, and which is priced some $41,000 less expensive than its more powerful sibling. Chew on those figures while we examine what differentiates the two S-Class Coupes. Drive Notes As expected, the single greatest highlight of the 2015 S63 Coupe is its engine. As a powerplant, it's a gem. As a hand-built engineering exercise, its 577 horsepower and 664 pound-feet of torque are just as impressive in real life as they sound when recited from stat sheets. Not that the old CL63 AMG was lacking in power, but the new S63 AMG Coupe boasts 41 more horses and 74 more lb-ft than the outgoing engine. The run to 60 miles per hour takes a scant 3.9 seconds, according to M-B, aided in no small part by the car's 4Matic all-wheel-drive system and other assorted electronic brains deciding where, exactly, all those ponies should be sent. The rear-biased system is tuned to send two-thirds of the engine's power to the rear wheels in a bid to make the car feel more like what performance-minded drivers expect. Top speed is electronically limited to 186 miles per hour, which is plenty fast enough, even in the days of 200-plus-mph sedans from M-B's former corporate cousin Dodge. We didn't get anywhere near the car's maximum velocity, but our brief trips into triple-digit territory were quiet, comfortable and completely free of drama. The seven-speed automatic gearbox responds quickly to requests of your right foot, but the steering wheel-mounted paddles don't change gears as quickly as we'd like when in Manual mode. Controlled Efficiency (which we'd call Comfort) maximizes efficiency, keeping the transmission in higher gears and shifting earlier than when in Sport mode, and we didn't find much fault with the computer's shifting algorithms in either setting.

Frankfurt Motor Show Notes: Why Jaguar decided to build an SUV

It was inevitable. Jaguar had to make an SUV, and that notion became reality this week with the debut of the F-Pace, an all-wheel-drive five-seater that will launch in the United States next spring. Some purists may cringe. But in an era when Porsche, Bentley, Lamborghini, Rolls-Royce, Aston Martin, and other traditional luxury brands are all building or (planning to build) SUVs, Jaguar had to evolve. While it seems like a leap for Jaguar to make an SUV, longtime design director Ian Callum said it's been in the works for years. "The first time I was asked the question was when I arrived 16 years ago," he said. So in 1999 (and probably well before that), Jaguar was already thinking SUV. What took so long? "It wasn't a priority," Callum said. Jaguar was concentrating on fixing its existing lineup, which was pockmarked with holes and poorly selling products, like the X-Type. Along the way, Jaguar and sister brand Land Rover were sold by Ford to Indian conglomerate Tata Motors. Flash forward several years, and Jaguar and Land Rover are both experiencing a resurgence in the United States and around the world. Jaguar's lineup is flush with the E-Type's modern successor, the F-Type, plus a new version of the XF. The XJ received a 2016 freshening, and the smaller XE sedan is on the way. Jaguar put its house in order as other factors conspired to make a crossover timely. Fuel prices stayed relatively low, and consumers in the US and China remained steadfast in their love for utility vehicles of all stripes. Making a Jaguar SUV became a priority. "The world was telling us in no uncertain terms this is what they wanted," Callum said. "Not to be in the sector would be a little naive for the sake of purity." Jaguar proved its intent two years ago when it revealed the C-X17 crossover concept at Frankfurt, and the final production model is close to the prototype's striking looks. "I thought we managed to maintain that spirit," Callum said. It's a true Jaguar, with cues from the F-Type, 1968 XJ, and other famous models. Who would have thought Jaguar would make an SUV? "I certainly didn't," Callum admitted. But the F-Pace is here. If Callum is okay with it, purists can be, too. Quick Hits Opel retrenches for 2016 and beyond Opel used the Frankfurt show to display its new generation of the Astra, a critical vehicle line for the German division of General Motors.

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.