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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.

Mercedes-AMG teases C63 coupe

Thanks to a recently leaked presentation slide, the cat is already out the bag when it comes to the attractive styling of the Mercedes-AMG C63 Coupe. Still, Mercedes' long series of teases for the upcoming two-door's design continues in a new video. Unlike the last brief teaser, this latest clip shows the coupe completely free of camouflage. Although, the editing is so quick in the 15-second clip, you never really get a strong glimpse at the future model beyond its front bumper. Not that we're complaining about another opportunity to hear the growl from the 4.0-liter, twin-turbo V8. After several videos and galleries of images with various looks at the new model, the wait to learn everything about the C63 Coupe is nearly over – the official reveal comes on August 19. All signs suggest that the two-door will offer the same choice as the sedan between 469 horsepower and 479 pound-feet of torque or 503 hp or 516 lb-ft versions of the twin-turbo V8 with a seven-speed gearbox.

Buick Wildcat and Electra concepts, Ford Maverick | Autoblog Podcast #732

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Road Test Editor Zac Palmer. They lead off with a discussion of the news. This section touches on the DeLorean Alpha5, Buick Wildcat EV Concept reveal, revival of the Buick Electra name, production reveal of the Mercedes-AMG One and some scuttle about Volkswagen's recently-bought Scout brand. After that, they move on to the cars they've been driving, including the Ford Maverick and Chrysler Pacifica Hybrid. After the pair finish with what they've been driving, the podcast transitions to an interview between Greg Migliore and former Car and Driver Editor-in-Chief Eddie Alterman. Finally, Greg and Zac wrap things up with some more spring and summer beer recommendations. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #732 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown News Delorean Alpha5 reveal Buick Wildcat EV Concept reveal Revival of the Buick Electra name Production reveal of the Mercedes-AMG One Volkswagen's recently-bought Scout brand controversy Cars we're driving 2022 Ford Maverick EcoBoost 2022 Chrysler Pacifica Hybrid Pinnacle Interview with Eddie Alterman Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: Green Podcasts Buick Chrysler Ford Mercedes-Benz Volkswagen Truck Coupe Minivan/Van SUV Concept Cars Electric Future Vehicles Luxury Off-Road Vehicles Performance Supercars Sedan