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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.

2017 Frankfurt Motor Show | Observations on the Ferrari Portofino, Honda Urban EV and more

Related: We obsessively covered the Frankfurt Motor Show — here's our complete coverage The 2017 Frankfurt Motor Show kicked off the fall reveal season with an impressive array of powerful cars blended with forward-looking concepts. It's a seminal period for automakers, who find themselves at the intersection of disruption and opportunity. With that in mind, here are four takeaways from Frankfurt. The transformation of the curvy yet overbaked Ferrari California T into the Portofino is complete, and its coming-out party in Frankfurt served notice that Ferrari's entry-level sports car is much more formidable. There was nothing wrong with the California (and later the California T), but the Portofino features a cleaner look with stronger lines and an elegant resemblance to the rest of the Ferrari family. The California name is a good one. Used on a number of memorable cars in the 1950s and '60s, it's steeped in tradition, and certainly Ferrari will dust it off again. But switching to Portofino, the name of a scenic town in Italy, is a nice way to change the conversation and generate fresh interest in this part of the Ferrari portfolio. Man, people are stoked over the Honda Urban EV concept. Why? I assume it's the retro look that harks back to early Civics, and the lack of information about the concept itself. What people don't know, they're imagining. Honda hasn't even confirmed the range, the car is very small, and it likely won't be sold in the United States. With this dearth of facts, enthusiasts are filling in their own blanks. I guess that's OK. Count me among the intrigued. When I saw pictures of this thing early Tuesday morning, I was pretty excited, too. We do know Honda is expanding its electric strategy, and two-thirds of its new vehicles sold around the world will have some form of electrification by 2030. The Urban EV launches in Europe in 2019, and a hybrid CR-V rolls out in Europe next year. Unconfirmed for the U.S. market, it seems like a no-brainer to bring that version of the CR-V here. The electrification and autonomous tech parade of concepts continues. You gotta be there. It's the cost of doing business in the modern automotive landscape. This technology takes years to develop and launch, so the next best thing to remind the world you're trying to be cutting-edge is to show off lots of fancy concepts. Frankfurt had plenty. A couple standouts: The BMW I Vision Dynamics and Audi's Elaine and Aicon.

Sunday Drive: Subaru Ascends up to the hottest market segment in America

Utility vehicles – in other words, crossovers and SUVs – are so hot right now. Two of our top stories from last week revolve around the utilitarian vehicle, but besides their jacked-up, five-door bodystyles, they couldn't be more different. The 2019 Subaru Ascent is headed into an extremely crowded and competitive segment, where it'll have to go up against industry stalwarts like the Toyota Highlander and Honda Pilot, not to mention upstart contenders like the Volkswagen Atlas. The Mercedes-AMG G63, on the other hand, has very little competition – there simply aren't very many ultra-luxurious, off-road-ready SUVs in the world vying to attract the dollars of the wellest-to-do customers across these United States. Moving on from crossovers and SUVs, our readers remain attracted to classic front-engine, rear-wheel-drive sportscars. The Toyota Supra's upcoming rebirth earns two places on our list of stories worth highlighting from the week that was; one with leaked information from a Japanese magazine, and another with rumors indicating that maybe we shouldn't be quite so excited. And finally, there's the strange case of the long-lost 2009 Chevy Corvette Z06 that one lucky individual happened to find squirreled away in a storage container with just 720 original miles. A high-horsepower head scratcher if we've ever seen one. As always, stay tuned to Autoblog this week for all the latest automotive news that's fit to print. 2019 Subaru Ascent vs Honda Pilot vs Toyota Highlander: How they compare on paper 2019 Mercedes-AMG G63 set to bare its 577-horsepower heart in Geneva Toyota Supra leaks in Japanese magazine ahead of Geneva debut Toyota Supra to be little more than a rebodied BMW Z4? Forgotten 720-mile 2009 Corvette Z06 emerges from storage Chevrolet Mercedes-Benz Subaru Toyota Coupe Crossover SUV Luxury Off-Road Vehicles Performance barn find sunday drive subaru ascent mercedes-amg g63