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2019 Chicago Auto Show Special | Autoblog Podcast #570

On this week's Autoblog Podcast, Editor-in-Chief Greg Migliore and Associate Editor Reese Counts discuss the 2019 Chicago Auto Show, including the debuts of the Toyota RAV4 TRD, refreshed Toyota Tacoma, the Mazda Miata 30th Anniversary Edition and the new Subaru Legacy. We also announced our best-of-show winners. We also talk about a couple of SUVs we've had at the office, the new Mercedes-Benz G-Class and the BMW X5. Finally, we spend your money on a new, fun vehicle for winter. Autoblog Podcast #570 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown 2020 Volkswagen Jetta GLI 2019 Mazda Miata 30th Anniversary Edition 2020 Subaru Legacy 2019 Ram 1500 split tailgate 2019 Toyota RAV4 TRD Off-Road Chicago Auto Show Editor's Picks Mercedes-Benz G550 BMW X5 Feedback Email – Podcast@Autoblog.com Review the show on iTunes Podcasts Chicago Auto Show BMW Mazda Mercedes-Benz RAM Subaru Toyota Volkswagen Videos Original Video

Mercedes teases a new Maybach concept convertible

Once again, Mercedes is taking a Vision concept to the Pebble Beach Concours this year. To start generating excitement, the company has released a teaser trailer for the car, and effectively no other information. But we think we've pieced together what the car is. Let's look at the video first. It shows a voluptuous blue body. It's all curves and clean lines inside and out. It also has an impressively prodigious prow with a proud three-pointed star at the front. The interior is all white with very little detail, and in addition to chrome, there are many copper trim pieces. There appear to be only two seats, too. Toward the end, we see a strip of copper trim on the outside as well, and just before the shot changes, we can see a bit of white interior that indicates this is a convertible. So we know this is an elegant, luxurious roadster. Is there anything else we can discern? Well, it seems Mercedes may have accidentally revealed the name of the car, or at least what it's based on. The video's file name includes the words "Maybach six." That happens to be the name of last year's Mercedes-Maybach coupe concept. On top of that, there's a striking resemblance between the long, flowing hoods of both cars. So it seems like a pretty safe bet that Mercedes will show the convertible version of that car, which was 18 feet long, and produced 738 horsepower from a quartet of electric motors. We'll find out if we're right when the car is revealed at Pebble Beach. Related Video: Image Credit: Mercedes-Benz Design/Style Maybach Mercedes-Benz Technology Emerging Technologies Convertible Concept Cars Electric Luxury Pebble Beach

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.